plural of sight glass

(idiomatic, figuratively) greed

plural of sign bit

plural of signature strike

A military attack which is based on detecting suspicious activity rather than confirmed intelligence of terrorism.

a signal, which can vary in strength due to various factors, transmitted and received by radio by means of radio waves.

plural of signal strength

the (measured) strength of a radio signal as received by a radio or any other device receiving radio signals, such as a mobile phone.

An emergency signal sent by radio (or other means) from a ship or aircraft in distress or danger. / An indication of distress.

Completed, particularly with respect to the conveyance of something.