E"thi*ops(?) n. [NL. See Ethiop.] (Old Chem.) A black substance; -- formerly applied to various preparations of a black or very dark color.
Ethiops martial (Old Chem.), black oxide of iron. -- Ethiops mineral (Old Chem.), black sulphide of mercury, obtained by triturating mercury with sulphur. -- Ethiops per se (Old Chem.), mercury in finely divided state, having the appearance of a dark powder, obtained by shaking it up or by exposure to the air.
Eth*moid"al(?), } a. [Gr. like a sieve; sieve + from: cf. F. ethmode, ethmodal.] (Anat.) (a) Like a sieve; cribriform. (b) Pertaining to, or in the region of, the ethmoid bone.
(Anat.), a bone of complicated structure through which the olfactory nerves pass out of the cranium and over which they are largely distributed.
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