Ucav is a coordinate term of opv.
As a noun opv is
(military|aviation|us) optionally piloted vehicle;.
ucav
English
===(
en)===
(
en noun)
unmanned combat aerial vehicle
Related terms
* UAV
* RPV
* OPV
* ROV
* AUV
See also
* drone
opv
English
Noun
(
en noun)
(military, aviation, US) optionally piloted vehicle;
Coordinate terms
* RPV
* UAV
* UCAV