[con.choi.dal] adj [Gk konchoeides like a mussel, fr. konche] (1666): having elevations or depressions shaped like the inside surface of a bivalve shell -- con.choi.dal.ly adv
CONCHOIDAL
Meaning of CONCHOIDAL in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012