Discolith :: Discolith (n.) One of a species of coccoliths, having an oval discoidal body, with a thick strongly refracting rim, and a thinner central portion. One of them measures about / of an inch in its longest diameter..
Discolor :: Discolor (v. t.) To alter the natural hue or color of; to change to a different color; to stain; to tinge; as, a drop of wine will discolor water; silver is discolored by sea water..
Discolor :: Discolor (v. t.) To alter the true complexion or appearance of; to put a false hue upon.