Origin of testaceanFrom New Latin Testācea, former order name, from Latin, neuter pl. of testāceus, covered with a shell, from testa, shell.
- (zoology) One of the rhizopods in the order Testacea.
Part or all of this entry has been imported from the 1913 edition of Websterâ€™s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.