Origin of testaceanFrom New Latin Testacea, former order name, from Latin, neuter pl. of testaceus, 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 Webster'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 The imported definitions may be significantly out of date, and any more recent senses may be completely missing.