Etymon

The

or

form of an

or

,

, or

either from an

in a language's development, from an

language, or from a

language.

Meaning as

and

thereby: The

of a

its

, which may

from its

when the latter

on

that are not

by the

alone (that is, they must be known in other ways, such as experience, training, education, or

lookup).