Webster's Revised Unabridged Dictionary · 1913

Salivate

Salivate , transitive verb

[Latin salivatus, past participle of salivare to salivate. See Saliva.]

To produce an abnormal flow of saliva in; to produce salivation or ptyalism in, as by the use of mercury.
To produce saliva, esp. in excess.

Probably influenced by the experiments of Pavlov, who trained dogs to salivate at the sound of a bell, by previously ringing the bell immediately prior to feeding them.