ARCHEUS
Ar*che"us, n. Etym: [LL. arch, Gr. Archi-, pref.]
Defn: The vital principle or force which (according to the
Paracelsians) presides over the growth and continuation of living
beings; the anima mundi or plastic power of the old philosophers.
[Obs.] Johnson.
ARCHI-
Ar"chi-. Etym: [L., archi-, Gr. arce-, erce-, OHG. erzi-.]
Defn: A prefix signifying chief, arch; as, architect, archiepiscopal. In Biol. and Anat. it usually means primitive, original, ancestral; as, archipterygium, the primitive fin or wing.
ARCHIANNELIDA
Ar`chi*an*nel"i*da, n. pl. Etym: [NL.; pref. archi- + annelida.]
(Zoöl.)
Defn: A group of Annelida remarkable for having no external segments or distinct ventral nerve ganglions.
ARCHIATER
Ar"chi*a`ter, n. Etym: [L. archiatrus, Gr.
Defn: Chief physician; — a term applied, on the continent of Europe, to the first or body physician of princes and to the first physician of some cities. P. Cyc.
ARCHIBALD WHEEL
Ar"chi*bald wheel.
Defn: A metal-hubbed wheel of great strength and elasticity, esp. adapted for artillery carriages and motor cars.