Etymon
Etymon , noun
[Latin, from Greek 'e`tymon the true literal sense of a word according to its derivation, an etymon, from {not transcribed} true, real, prob, akin to Sanskrit sotya, English sooth. See Sooth.]
1.
An original form; primitive word; root.
2.
Original or fundamental signification. [Rare]
Given as the etymon or genuine sense of the word.