aphelia

Plural of aphelion. aphelian (a-fe'li-an), a. [ sun. Aphelinus (af-e-li'nus), n. [NL., Aphaneri (a-fan'e-ri), n . pl . [NL., Gr. a-priv. smooth, simple, plain, also lit. not stony, + φανερός, manifest: see Phaneri.] A term applied by Maggi to some exceedingly minute organisms found in water, and made visible under the microscope only by the use of various hardening and coloring reagents: contrasted with Phaneri, such as bacteria. The Aphaneri are thought to be harmle . Smithsonian Rep., 1881, p. 418.