This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Biology Having a hard shell or shell-like outer covering: testaceous echinoderms.

adj. Biology Composed of a shell or shell-like material: a testaceous operculum.

adj. Having the reddish-brown or brownish-yellow hue of bricks.

adj. Pertaining to earthenware or baked clay.

adj. Of a reddish-yellow or brownish colour, like brick.

adj. Having a shell, especially one which is not articulated.

adj. Of or pertaining to shells; consisted of a hard shell, or having a hard shell.

adj. Having a dull red brick color or a brownish yellow color.

Of or pertaining to shells, or testacean animals, as shell-fish; testacean.

Consisting of a hard continuous shell or shelly substance; shelly: thus, an oyster-shell is testaceous.

Having a hard shell, as oysters, clams, and snails: distinguished from crustaceous, or soft-shelled, as a lobster or crab.

Derived or prepared from shells of mollusks or crustaceans: as, a testaceous medicine; a pearl is of testaceous origin.

In botany and zoology, dull-red brick-color; brownish-yellow, or orange-yellow with much gray.

adj. relating to or possessing a testa or hard shell

"From IV 2-10 he discusses the parts, both internal and external, of the ˜bloodless™ animals, i.e. the crustaceans, testaceous mollusks, cephalopods and insects."

acephalous    benthic    sheet-infectious    marshpee    bivalve