This is an idiom meaning someone rudely and pointedly ignored you. Here are some sentences.
The "TERM" of your sentence.
A slang term for a prison sentence is "doing time."
I'm not familiar with that term.
Someone uses the word 'term' in a sentence as a synonym for word. For example, Shogun is a term for a military commander of Japan.
There is no such thing as an "extended sentence" in grammar. "Extended sentence" is a legal term, not a grammatical term.
No, the term "digital mail" should not be capitalized in a sentence unless it is at the beginning of a sentence or included in a title.
the people elected the Parliament for the parliamentary democracy (i know its not the best sentence but its still a sentence using the term)
A number sentence is a mathematical equation, such as 2x6+5x4=32.
subject
The noun in the sentence is half term, a compound noun.
The term for a word or sentence that reads the same in both directions is "palindrome."
The term for saying a sentence in a different way but with the same meaning is "paraphrasing."