horizon on water / a horizontal or level line (perpendicular to the force of gravity)

horizon on land

vitamin D2

Synonym of リボフラビン (ribofurabin, “riboflavin”); vitamin B2

2.5D / (by extension, fandom slang) belonging to a grey area between "2D" (anime, etc.) and "3D" (live-action, etc.), such as voice actors

(astronomy, physics) cosmic ray

a Japanese stringed instrument played by plucking, vaguely similar to a banjo / short for 三味線草 (shamisen-gusa): the shepherd's purse, Capsella bursa-pastoris

(uncommon) a Japanese stringed instrument played by plucking, vaguely similar to a banjo

stretch mark, pregnancy stretch mark

polyurethane-coated copper wire