An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

To turn upside down.
To reverse in position, order, direction, or relationship. → inversion layer.

From M.Fr. invertir, from L. invertere "turn upside down, turn about," from → in- "in, on" + vertere "to turn;" cf. Pers. gardidan, gaštan "to turn, to change;" Mid.Pers. vartitan; Av. varət- "to turn, revolve;" Skt. vartati; O.H.G. werden "to become;" PIE base *wer- "to turn, bend."

Vâgardândan, from vâ-, → re-, + gardândan, from gardidan "to turn; to change," from Mid.Pers. vartitan; Av. varət- "to turn, revolve;" cf. Skt. vrt- "to turn, roll," vartate "it turns round, rolls;" L. vertere "to turn;" O.H.G. werden "to become;" PIE base *wer- "to turn, bend."
Vârunidan, infinitive of vârun, → inverse.

In atomic physics, a condition in which there are more electrons in an upper energy level than in a lower one, while under normal conditions of thermal equilibrium the reverse is true. → optical pumping.

Inverted, p.p. of → invert; → population.