"What's the plural of antenna?"

The plural of antenna is antennae or antennas.

Definition of antenna:

1. Sensory organs on the heads on insects and crustaceans.

2. A device such as a metal rod or wire used to send and receive radio signals.

When to Use 'Antennae' or 'Antennas'?

The word antenna has a Latin root meaning "sail yard" and originally referred only to the animal organ meaning of the word. Being of Latin origin the plural of antenna in this sense is antennae and this is used in both American and British English.

The second and most recent meaning of the word referring to radio-receiving instruments takes its plural form as antennas in American English.

British English tends to use the word antennae for the plural of both meanings of the word.

From the graph below you can see how use of the word antennas began to outpace antennae in written English, presumably as radio began to enter everyday life during the 1930s and beyond.

Plural of Antenna Example Sentences

Singular Example: The antennas that NASA's Space Communications and Navigation (SCaN) uses are a special bowl shaped antenna that focuses signals at a single point

Plural Example: Insect antennae have multiple functions and can be used to detect odors and tastes, wind speed and direction, heat and moisture, and even touch.

Plural Example: SCaN has over 65 antennas that help capture and transmit data to and from satellites in space