"one of the Radiolaria," a name applied by Haeckel (1862) to the protozoa called by Ehrenberg Polycystina. The classification name is Modern Latin, from Latin radiolus, diminutive of radius (q.v.), so called for the organisms' radiant "spikes."
"named, called" (archaic), from levelled past participle of Middle English highte, from Old English hatte "I am called" (passive of hatan "to call, name, command") merged with heht "called," active past tense of the same verb. Hatte was the only survival in Old English of the old Germanic synthetic passive tense. Proto-Germanic *haitanan "to call, summon," also is the source of Old Norse heita, Dutch heten, German heißen, Gothic haitan "to call, be called, command," and is perhaps from an extended form of PIE root *keie- "to set in motion," but Boutkan finds it to be of uncertain origin.