Compounded, meaningful, conventional: defining speech
Speech (kalām) is defined as an utterance that is compounded, meaningful, and made by convention (al-lafẓ al-murakkab al-mufīd bil-waḍʿ). Each term narrows what counts: speech must be composed of more than one element, must convey a complete benefit, and must carry its meaning by convention rather than by accident or nature. The composition can be implied, as in a command like qum, whose understood subject makes the single spoken word a composed statement.