also: かたがい
Zoological term for a mollusk with a single shell, such as a snail or limpet. Contrasts with 二枚貝 (bivalve).
The turban shell is a type of univalve.
I research the difference between univalves and bivalves.
Standard kanji spelling for the zoological term 'univalve'.
Alternate reading; less common than かたかい.
Compound of 片 (kata, 'one side') + 貝 (kai, 'shell'). The reading かたかい is a straightforward combination; the variant かたがい shows rendaku voicing.