IV

n. injection or feeding administered through a vein

adj. occurring within a vein or veins, entering through a vein

number 4 (Roman Numerals)

IV as the Roman number for four may refer to:Led Zeppelin IV, the fourth album by Led Zeppelin containing the song "Stairway to Heaven"IV (Cypress Hill album), the fourth album of Cypress HillIV (Diamond Rio album), a 1996 album by Diamond RioIV (Faust album), also known as Faust IV, the fourth album by FaustIV (Godsmack album), the fourth album of GodsmackIV (To/Die/For album), the fourth album of To/Die/ForIV (Veruca Salt album), the fourth album by Veruca SaltIV (Winger album), an album of WingerI.V., X Japan songToto IV, the fourth album of the band TotoGrand Theft Auto IV, a video game that was referred to simply as IV by the developers before its release
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Noun
1. the cardinal number that is the sum of three and one
(synonym) four, 4, tetrad, quatern, quaternion, quaternary, quaternity, quartet, quadruplet, foursome, Little Joe
(hypernym) digit, figure
2. administration of nutrients through a vein
(synonym) intravenous feeding
(hypernym) feeding, alimentation

Adjective
1. being one more than three
(synonym) four, 4
(similar) cardinal

Inside a vein (blood vessel). Also called intravenous.

Intravenous (in-tra-VEE-nus). Injected into a blood vessel.