Where does “antiextensive” come from?

antiextensive (English) comes from English extensive, from Late Latin extensivus, from Latin extēnsus, from Latin extendō, from Latin tendō, from Ancient Greek τένων, from Proto-Indo-European ten- — to stretch, to extend.

antiextensive (English): Of an operation in morphology: such that A\circ B\subseteq A

Definitions

Of an operation in morphology: such that A\circ B\subseteq A

Ancestry of “antiextensive”, step by step

antiextensive traces back through two separate lines of ancestry.

via English extensive

Step	Language	Word	Meaning
1	English	extensive	having a great extent; covering a large area;...
2	Late Latin	extensivus	extensive, extendible
3	Latin	extēnsus	—
4	Latin	extendō	to stretch or thrust out
5	Latin	tendō	to stretch, stretch out, distend, extend
6	Ancient Greek	τένων	tendon, sinew
7	Proto-Indo-European	ten-	to stretch, to extend

via English anti

Step	Language	Word	Meaning
1	English	anti	Opposed to something; That has a torsion angle...
2	English	anti-	Against, hostile to; Contrasting with the norm;...
3	Ancient Greek	ἀντι-	anti-, against; like, reminiscent of
4	Ancient Greek	ᾰ̓ντῐ́	opposite

Every word from Proto-Indo-European ten- →Every word from Ancient Greek τένων →Every word from Latin tendō →