To come forth gradually into being; undergo evolution.
Astro.: To change with time by the action of varying physical conditions.
Biology: To develop by a process of evolution to a different adaptive state or condition.
Etymology (EN): L. evolvere “to unroll, open, unfold,” from → ex- “out”
- volvere
“to roll, turn, twist;” PIE base *wel- “to turn, revolve;” cf. Skt. valate
“turns round;” Gk. eilein “to turn, squeeze,” helix “spiral object;”
O.H.G. walzan “to roll, waltz;” Lith. valtis “twine, net,” apvalus
“round;” O.E. wealwian “to roll (in mud);” Welsh olwyn “wheel.”
Etymology (PE): Fargaštan, fargašt kardan, from fargašt,
from far- “forward” (Mid.Pers. fra- “forward, before; much; around;”
O.Pers. fra- “forward, forth;” Av. frā, fərā-, fra-
“forward, forth; excessive;” cf. Skt. prá- “before; forward, in fron;”
Gk. pro “before, in front of;” L. pro “on behalf of, in place of, before, for;”
PIE *pro-) + gašt, present stem of gaštan, gardidan
“to change; to turn” (Mid.Pers. vartitan; Av. varət- “to turn, revolve;”
cf. Skt. vartati; L. vertere; O.H.G. werden “to become;”
PIE *werto, *wer-).
