(tennis) The official who sits in the umpire chair, who is the main authority during a match

(tennis) line judge

plural of umbrella bird

Alternative form of umbrellabird

Synonym of parasol (“a small light umbrella used as protection from the sun”)

plural of UMA

plural of umbrella ant

leaf-cutter ant

(pharmacology) Used to form names of monoclonal antibodies derived from a human source.

Alternative form of umbrella cover