1. A shell-like curve.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• cancoid,
• cancrroid,
• cancroid,
• cokcoid,
• concholgy,
• concholoy,
• nonchoic,
• xonchoid,
• vonchoid,
• fonchoid,
• donchoid,
• cinchoid,
• conchois,
• conchoird,
• conchoide,
• conicoied,
• Conikoid,
• eunichoid,
• onuychoid,
• onychoiid

The plural of the "Conchoid" can be the "conchoids".

The singular of the "Conchoid" can be the "Conchoid".