What is the meaning of Syntagma?

A constituent segment within a text, such as a word or a phrase that forms a syntactic unit.

An arrangement of units that together bears a meaning.

A Macedonian phalanx fighting formation consisting of 256 men with long spears (sarissae).

An organized structural, functional unit of anatomical or chemical subunits: equivalent to "tagma", or a structure comprising several tagmata in various contexts.

1 2 3 ‖syntagma” listed in the Oxford English Dictionary [2 Ed.; 1989]

a syntagma

syntagma

Source: wiktionary.org