(obsolete) antecedent; coming earlier in time

(music) the first phrase in a period

plural of antecedent phrase

Located before, or in front.

(radio) A paraboloid antenna.

(radio) A microwave antenna consisting of an open waveguide of increasing size towards the aperture

plural of anterior chamber

(anatomy, ophthalmology) A space inside the eye between the cornea and the iris, filled with aqueous humour.

Synonym of Yagi-Uda antenna

(radio) A switch allows one to select which antenna to use with a transmitter, receiver, or transceiver