IPA: /tɛˈsteɪʃəs/
KK: /tɛˈsteɪʃəs/
Relating to or having a shell or shell-like covering, often used in biology to describe certain organisms or structures.
The testaceous species of mollusks are known for their hard, protective shells.
Testaceous → It is formed from "testa" (meaning shell) and the suffix "-ceous" (meaning having the nature of). The word "testaceous" refers to something that has a shell-like quality or is shell-like in nature.
Think of 'testa' meaning shell, and remember that 'testaceous' describes something that has the nature of a shell.