(mathematics) infix notation

(mathematics, computing) A function or other mapping that carries variables defined on a domain into another variable; operator.

writing, notation, transcription / textual representation; spelling

write, note, transcribe / be represented in text

notation

mathematics (field of study)

(arithmetic) arithmetic operator

unary operator (operator taking one operand)

(mathematics, computing) operand

a child / (figuratively) a girl, especially a dear or desired one (compare use of English baby, babe) / a smaller or younger version of a bigger object