hereafter Look up hereafter at Dictionary.com
Old English heræfter (adv.) "in the future; later on;" see here + after. Meaning "after death" is mid-14c. As a noun, "time in the future," from 1540s. Meaning "a future world, the world to come" is from 1702.
hereby Look up hereby at Dictionary.com
mid-13c., from here + by. Compare Dutch hierbij, German hierbei.
hereditable (adj.) Look up hereditable at Dictionary.com
mid-15c.; see heredity + -able. Related: Hereditability.
hereditament Look up hereditament at Dictionary.com
"inherited property," mid-15c., from Medieval Latin hereditamentum, from Latin hereditatem (see heredity).
hereditary (adj.) Look up hereditary at Dictionary.com
early 15c., hereditarie, from Latin hereditarius, from hereditas (see heredity).
hereditism (n.) Look up hereditism at Dictionary.com
1874; see heredity + -ism.
heredity (n.) Look up heredity at Dictionary.com
1530s, from Middle French hérédité (12c.), from Latin hereditatem (nominative hereditas) "heirship, inheritance, condition of being an heir," from heres (genitive heredis) "heir, heiress," from PIE root *ghe- "to be empty, left behind" (source also of Greek khera "widow"). Legal sense of "inheritable quality or character" first recorded 1784; the modern biological sense seems to be found first in 1863, introduced by Herbert Spencer.
Herefordshire Look up Herefordshire at Dictionary.com
Old English Herefordscir, from Hereford (958), literally "ford suitable for the passage of an army." Probably so-called in reference to the Roman road passing over the Wye River. Herford in Germany has the same etymology. As the name for a type of cattle, first bred there, it is attested from 1789.
herein Look up herein at Dictionary.com
late Old English herinne; see here + in.
hereof Look up hereof at Dictionary.com
late Old English; see here + of. Compare Danish hereaf, Swedish häraf.
hereon Look up hereon at Dictionary.com
Old English heron; see here + on.
heresiarch (n.) Look up heresiarch at Dictionary.com
1620s, from Church Latin haeresiarcha, from Late Greek hairesiarkhes (see heresy + arch-).
heresy (n.) Look up heresy at Dictionary.com
"an opinion of private men different from that of the catholick and orthodox church" [Johnson], c.1200, from Old French heresie (12c.), from Latin hæresis, "school of thought, philosophical sect," used by Christian writers for "unorthodox sect or doctrine," from Greek hairesis "a taking or choosing, a choice," from haireisthai "take, seize," middle voice of hairein "to choose," of unknown origin, perhaps from PIE *ser- (5) "to seize" (cognates: Hittite šaru "booty," Welsh herw "booty").

The Greek word was used in the New Testament in reference to the Sadducees, Pharisees, and even the Christians, as sects of Judaism, but in English bibles it usually is translated sect. Meaning "religious belief opposed to the orthodox doctrines of the Church" evolved in Late Latin. Transferred (non-religious) use from late 14c.
heretic (n.) Look up heretic at Dictionary.com
mid-14c., from Old French eretique (14c., Modern French hérétique), from Church Latin haereticus, from Greek hairetikos "able to choose," the verbal adjective of hairein (see heresy).
heretical (adj.) Look up heretical at Dictionary.com
early 15c., from Middle French eretical and directly from Medieval Latin haereticalis, from haereticus (see heretic).
hereto Look up hereto at Dictionary.com
late 12c., from here + to.
heretofore Look up heretofore at Dictionary.com
c.1200, from here + obsolete Old English toforan.
hereunder Look up hereunder at Dictionary.com
early 15c., from here + under.
hereunto Look up hereunto at Dictionary.com
c.1500, from here + unto.
hereupon Look up hereupon at Dictionary.com
late Old English, from here + upon.
herewith Look up herewith at Dictionary.com
late Old English herwith; see here + with.
heriot (n.) Look up heriot at Dictionary.com
Old English here-geatwe (plural) "military equipment, army-gear," from here "army" (see harry). An Anglo-Saxon service of weapons, loaned by the lord to his retainer and repayable to him upon the retainer's death; transferred by 13c. to a feudal due upon the death of a tenant, payable to his lord in beasts.
heritable (adj.) Look up heritable at Dictionary.com
early 15c., from Old French héritable (c.1200), from hériter (see heritage). Related: Heritability.
heritage (n.) Look up heritage at Dictionary.com
c.1200, "that which may be inherited," from Old French iritage, eritage, heritage, from heriter "inherit," from Late Latin hereditare, ultimately from Latin heres (genitive heredis) "heir" (see heredity).
Herman Look up Herman at Dictionary.com
masc. proper name, from German Hermann, from Old High German Hariman, literally "man of war, warrior," from hari "host, army" (see harry (v.)) + man "man" (see man (n.)).
hermaphrodism (n.) Look up hermaphrodism at Dictionary.com
1808, from French hermaphrodisme, from hermaphrodite (see hermaphrodite).
hermaphrodite (n.) Look up hermaphrodite at Dictionary.com
late 14c. (harmofroditus), from Latin hermaphroditus, from Greek Hermaphroditos (Latin Hermaphroditus), son of Hermes and Aphrodite, who, in Ovid, was loved by the nymph Salmacis so ardently that she prayed for complete union with him and as a result they were united bodily, combining male and female characteristics. Also used figuratively in Middle English of "one who improperly occupies two offices." As a name for the condition, Middle English had hermofrodito (late 14c.), hermofrodisia (early 15c.). As an adjective, from c.1600.
hermaphroditic (adj.) Look up hermaphroditic at Dictionary.com
1620s, from hermaphrodite + -ic. Earlier form was hermaphroditical (c.1600).
hermeneutic (adj.) Look up hermeneutic at Dictionary.com
"interpretive," 1670s, from Greek hermeneutikos "interpreting," from hermeneutes "interpreter," from hermeneuein "to interpret," of unknown origin (formerly considered ultimately a derivative of Hermes, as the tutelary divinity of speech, writing, and eloquence).
hermeneutical (adj.) Look up hermeneutical at Dictionary.com
1798, from hermeneutic + -al (1). Related: Hermeneutically.
hermeneutics (n.) Look up hermeneutics at Dictionary.com
1737, from hermeneutic; also see -ics.
Hermes Look up Hermes at Dictionary.com
Olympian messenger and god of commerce, son of Zeus and Maia, identified by the Romans with their Mercury, from Greek Hermes, of unknown origin.
hermetic (adj.) Look up hermetic at Dictionary.com
c.1600 (implied in hermetically), "completely sealed," also (1630s) "dealing with occult science or alchemy," from Latin hermeticus, from Greek Hermes, god of science and art, among other things, identified by Neoplatonists, mystics, and alchemists with the Egyptian god Thoth as Hermes Trismegistos "Thrice-Great Hermes," who supposedly invented the process of making a glass tube airtight (a process in alchemy) using a secret seal.
hermetically (adv.) Look up hermetically at Dictionary.com
c.1600; see hermetic.
Hermione Look up Hermione at Dictionary.com
fem. proper name, from Greek Hermione, derived from Hermes (genitive Hermeio).
hermit (n.) Look up hermit at Dictionary.com
early 12c., "religious recluse," from Old French (h)eremite, from Late Latin ermita, from Greek eremites, literally "person of the desert," from eremia "desert, solitude," from eremos "uninhabited, empty, desolate, bereft," from PIE *ere- (2) "to separate" (cognates: Latin rete "net," Lithuanian retis "sieve"). Transferred sense of "person living in solitude" is from 1799. The hermit crab (1735) was so called for its solitary habits.
hermitage (n.) Look up hermitage at Dictionary.com
late 13c., "dwelling place of a hermit," from Old French hermitage, from Latin heremite (see hermit). Earlier in the same sense was hermitorie (c.1200), from Medieval Latin hermitorium. Transferred sense of "solitary or secluded dwelling place" is from 1640s.
hernia (n.) Look up hernia at Dictionary.com
late 14c., hirnia, from Latin hernia "a rupture," related to hira "intestine," PIE *ghere- "gut, entrail" (see yarn). The re-Latinized spelling is from 17c. Related: Herniated (1879).
hernial (adj.) Look up hernial at Dictionary.com
early 15c., from Medieval Latin hernialis, from hernia (see hernia).
herniation (n.) Look up herniation at Dictionary.com
1875, from hernia + -ation.
hero (n.1) Look up hero at Dictionary.com
late 14c., "man of superhuman strength or physical courage," from Latin heros "hero," from Greek heros "demi-god" (a variant singular of which was heroe), perhaps originally "defender, protector," and from PIE root *ser- (1) "to watch over, protect" (see observe). Meaning "man who exhibits great bravery" in any course of action is from 1660s. Sense of "chief male character in a play, story, etc." first recorded 1690s. First record of hero-worship is from 1774.
hero (n.2) Look up hero at Dictionary.com
1955, the New York term for a sandwich elsewhere called submarine, grinder, poor boy (New Orleans), or hoagie (Philadelphia); origin unknown, perhaps so called for its great size, or a folk etymology alteration of Greek gyro as a type of sandwich.
heroic (adj.) Look up heroic at Dictionary.com
1540s, shortened from heroical (early 15c.), also heroycus "noble, magnanimous," from Latin heroicus "of a hero, heroic, mythical," from Greek heroikos "pertaining to heroes," from heros (see hero (n.1)). Earlier was heroical (early 15c.). The Heroic Age in Greece was the time before the return of the armies from the fall of Troy. Related: Heroically. Heroic verse (1610s), decasyllabic iambic, is from Italian.
heroics (n.) Look up heroics at Dictionary.com
1590s, "heroic verse" (see heroic). Meaning "deeds worthy of a hero" attested by 1831.
heroin (n.) Look up heroin at Dictionary.com
1898, from German Heroin, coined 1898 as trademark registered by Friedrich Bayer & Co. for their morphine substitute, traditionally from Greek heros (see hero (n.1)) because of the euphoric feeling the drug provides, but no evidence for this seems to have been found so far.
A new hypnotic, to which the name of "heroin" has been given, has been tried in the medical clinic of Professor Gerhardt in Berlin. ["The Lancet," Dec. 3, 1898]
heroine (n.) Look up heroine at Dictionary.com
1650s, from Latin heroine, heroina (plural heroinae) "a female hero, a demigoddess" (such as Medea), from Greek heroine, fem. of heros (see hero (n.1)). As "principal female character" in a drama or poem, from 1715.
heroism (n.) Look up heroism at Dictionary.com
1717, from French héroisme, from heros (see hero (n.1)).
heron (n.) Look up heron at Dictionary.com
c.1300, from Old French hairon (12c.), earlier hairo (11c., Modern French héron), from Frankish *haigiro or some other Germanic source, from Proto-Germanic *hraigran (cognates: Old High German heigaro "heron," German Reiher, Dutch reiger, Old Norse hegri), from PIE *qriq-, perhaps imitative of its cry (compare Old Church Slavonic kriku "cry, scream," Lithuanian kryksti "to shriek"). Old English cognate hraga did not survive into Middle English.
herpes (n.) Look up herpes at Dictionary.com
late 14c., "inflammatory, spreading skin condition" (used of shingles, gangrene, etc.), from Latin herpes "a spreading skin eruption," from Greek herpes, the name for the disease shingles, literally "creeping," from herpein "to creep" (cognate with Latin serpere "to creep;" see serpent). The condition was not distinguished into specific diseases until early 19c.
herpetic (adj.) Look up herpetic at Dictionary.com
"pertaining to herpes," 1783, from Greek herpes (genitive herpetos); see herpes + -ic.