単たん細さい胞ぼう

noun, noun which may take the genitive case particle 'no'

single cell; unicellular

Biological term for organisms consisting of a single cell. Often used in scientific contexts.

• アメーバは単たん細さい胞ぼう生せい物ぶつです。

  Amoebas are single-celled organisms.

noun which may take the genitive case particle 'no', noun

simple-minded; one-track-minded

Colloquial, mildly derogatory term for a person who thinks in a simplistic, inflexible way, as if having only one brain cell.

• 彼かれは単たん細さい胞ぼうだから、一いち度どに一ひとつのことしか考かんがえられない。

  He's so simple-minded he can only think about one thing at a time.