noun
Scientific term for a three-dimensional spiral shape, especially in biology (e.g., spirochetes) or geometry.
梅毒の病原体は螺旋体の一種である。
The pathogen of syphilis is a type of spirochete (spiral-shaped bacterium).
DNAは二重螺旋体の構造を
DNA takes the form of a double helix.
螺旋 is the general word for 'spiral' or 'helix', while 螺旋体 specifically refers to a spiral-shaped body or organism.
Compound of 螺旋 (rasen, 'spiral') + 体 (tai, 'body'). The term is used in scientific contexts to describe spiral-shaped structures or organisms.