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

Not essential or inherent; not forming part of or belonging to a thing. → intrinsic.

Extrinsic, from L.L. extrinsecus "outward," from extrim- + secus "beside," from sequi "to follow."

Borungin, from borun "out, the outside" (Mid.Pers. bêron, from bê "outside, out, away" + rôn "side, direction;" Av. ravan- "(course of a) river") + -gin adj. suffix, contraction of âgin "filled."

Photoconductivity due to the addition of impurities or external causes.

→ extrinsic; → photoconductivity.

Šidhâzandegi, → photoconductivity; borungin, → extrinsic.

A semiconductor, such as silicon, whose responsive properties can be altered by the addition of impurities. Copper- and mercury-doped germanium are both examples of this semiconductor material.

→ extrinsic; → semiconductor.

A star whose variation in apparent brightness is not due to changes in the star itself but to some external cause, such as eclipsing by a companion.

→ extrinsic; → variable; → star.