abiogenesis, the theory of spontaneous generation

(linguistics) the theory that Old Japanese had eight vowels: /a/, /i₁/, /i₂/, /u/, /e₁/, /e₂/, /o/.

Synonym of 地動説 (chidōsetsu, “heliocentrism”)

Synonym of 天動説 (tendōsetsu, “geocentrism”)

(theology, historical) monophysitism

leaf, block, classifier for cake / something D / fourth in rank / street / even

mutual, together, each other / used in official or epistolary writings for elegance or politeness

mutual, together, each other, meeting

Short for 合い服 (あいふく, aifuku, “clothing worn in spring or autumn”).

hail (precipitated ice) / ice (frozen water)