A species of penguin, Pygoscelis antarcticus, with a distinctive black strip under the head.

(archaic) third-person singular simple present indicative form of plunge

(pharmacology) A synthetic compound C₅₁H₃₄N₆Na₆O₂₃S₆ derived from urea, obtained as a white powder and administered intravenously to treat early stages of African sleeping sickness, onchocerciasis,...

(organic chemistry) A sesquiterpene lactone found in Elephantopus mollis.