Etymology
Advertisement
negative (adj.)

c. 1400, negatif, "expressing denial" (a sense now rare or obsolete), from Anglo-French negatif (early 14c.), Old French negatif (13c.) and directly from Latin negativus "that which denies," from negat-, past-participle stem of negare "deny, say no" (see deny).

The meaning "expressing negation" is from c. 1500; that of "characterized by absence of that which is affirmative or positive" is from 1560s. Algebraic sense, denoting quantities which are a subtraction from zero, is from 1670s. The electricity sense is from 1755.

Negative Capability, that is when a man is capable of being in uncertainties, Mysteries, doubts without any irritable reaching after fact and reason. [John Keats, letter, Dec. 21, 1817]

Related: Negatively.

Related entries & more 
Advertisement
rh- 

consonantal digraph, an initial sequence used in Latin (and thus in English words from Latin) to represent Greek initial aspirated r-. The medial Greek form of it usually is represented by -rrh-, as in catarrh, diarrhea, hemorrhage, myrrh, Pyrrhic. As it was pronounced as simply "r" in Middle English (as in Old French and Spanish), the -h- tended to be dropped in spelling but was restored in early Modern English with the classical revival.

Related entries & more 
Rh. 

chemical symbol of rhodium (q.v.). 

Related entries & more 
negative (n.)

late 14c., "a prohibition" (a sense now obsolete), also "absence, nonexistence; opposite," from Old French negatif and directly from Latin negativus (see negative (adj.)).

Meaning "a negative statement" is from 1560s. Sense of "that side of a question which denies what the opposite side affirms" is from 1570s. Meaning "the right or power of refusing assent" is from 1610s. Meaning "a negative quality" is from 1640s. In mathematics, "a negative number," from 1706. Photographic sense of "image in which the lights and shades are the opposite of those in nature" is recorded by 1853. As a response, "I refuse, disagree, no," from 1945, originally in radio communication. 

Related entries & more 
negative (v.)

"reject, refuse to accept," 1706, from negative (adj.).

Related entries & more 
Advertisement
Rh factor 

1942, from the first letters of rhesus; so called because the blood group, and its effects, were discovered in the blood of rhesus monkeys (1941).

Related entries & more 
negativity (n.)

"the quality of being negative in any sense," 1842, from negative + -ity.

Related entries & more 
Reims 

city in northeastern France, named for the Remi, a Gaulish people whose name is said to mean "dominant ones." The former French spelling was with an Rh- (compare Rhemish).

Related entries & more 
negentropy (n.)

1950, compounded from negative entropy.

Related entries & more 
minus (n.)

1650s, "the minus sign," from minus (prep.). From 1708 as "a negative quantity, a quantity subtracted."

Related entries & more