Words related to rain

irrigate (v.)
"supply land with water," 1610s, from Latin irrigatus, past participle of irrigare "lead water to, refresh, irrigate, flood," from assimilated form of in- "into, in, on, upon" (from PIE root *en "in") + rigare "to water, to moisten," of uncertain origin. Perhaps [Watkins] from PIE *reg- (2) "moist" (see rain (n.)). De Vaan offers as possibilities the root of regere "to direct, lead," on the notion of leading water onto the fields, or to the root of rigere "be stiff," literally "stretch." The first better suits the sense, but has phonetic problems.

Related: Irrigated; irrigating. In Middle English it was an adjective, "watered, flooded" (mid-15c.). Other adjectival forms have been irriguous (1650s), irrigative (1842), irrigatorial (1867).
rainbow (n.)

"arc of prismatic colors formed by the refraction of light rays by drops of rain or vapor," Middle English rein-bowe, from Old English renboga; see rain (n.) + bow (n.). Common Germanic compound (Old Frisian reinboga, Old Norse regnbogi, Swedish regenbåge, Dutch regenboog, German Regenbogen). The American rainbow trout (1876) is so called for its resplendent colors. Old English also had scurboga "shower-bow."

raincheck (n.)

also rain-check, rain check, "ticket given to a spectator at an outdoor event for admission at a later date, or refund, should the event be interrupted by rain," 1884; see rain (n.) + check (n.1). Originally of tickets to rained-out baseball games.

rain-cloud (n.)

also raincloud, "cloud from which rain falls," 1800, from rain (n.) + cloud (n.).

raincoat (n.)

also rain-coat, "coat worn as protection against rain," 1821, from rain (n.) + coat (n.).

raindrop (n.)

"a drop of rain," Middle English rein-drope, from Old English rendropa; see rain (n.) + drop (n.).

rainfall (n.)

also rain-fall, by 1850 as "amount of precipitation that falls as rain, from rain (n.) + fall (n.). By 1858 as "a falling of rain."

rainmaker (n.)

also rain-maker, "sorcerer who claims the power of producing a fall of rain by supernatural means," 1775, in reference to American Indian tribal magicians, from rain (n.) + agent noun of make (v.).

rain-proof (adj.)

also rainproof, "not admitting the entrance of rain or penetration by it," 1788, from rain (n.) + proof (n.).

rainstorm (n.)

"a storm of rain," 1804, from rain (n.) + storm (n.).