1.
Linguistics .
a.
the study of the rules for the formation of grammatical sentences in a language.
b.
the study of the patterns of formation of sentences and phrases from words.
c.
the rules or patterns so studied: English syntax.
d.
a presentation of these: a syntax of English.
e.
an instance of these: the syntax of a sentence.
2.
Logic.
a.
that branch of modern logic that studies the various kinds of signs that occur in a system and the possible arrangements of those signs, complete abstraction being made of the meaning of the signs.
b.
the outcome of such a study when directed upon a specified language.
3.
a system or orderly arrangement.
4.
Computers. the grammatical rules and structural patterns governing the ordered use of appropriate words and symbols for issuing commands, writing code, etc., in a particular software application or programming language.