Adjective

(positronic brain) (-)

Of or pertaining to positrons

(science fiction) Of or pertaining to a supposed analogue of electronics using positrons

* {{quote-magazine

, year = 1941 , date = April , first = Isaac , last = Asimov , authorlink = Isaac Asimov , magazine = , title = , volume = 27 , issue = 2 , page = 44 , passage = By exact count, there are seventy-five thousand, two hundred and thirty-four operations necessary for the manufacture of a single positronic brain. }}

Adjective

(en adjective)

Scornfully mocking or cynical.

He distances himself from people with his nasty, sardonic laughter.

* Sir H. Wotton

strained, sardonic smiles

* Burke

the scornful, ferocious, sardonic grin of a bloody ruffian

Disdainfully or ironically humorous.