What is Singular?

Singular definition and meaning on Dictionary terms:
extraordinary; remarkable; exceptional: a singular success.
unusual or strange; odd; different: singular behavior.
being the only one of its kind; distinctive; unique: a singular example.
separate; individual.

Grammar. noting or pertaining to a member of the category of number found in many languages that indicates that a word form has one referent or denotes one person, place, thing, or instance, as English boy and thing, which are singular nouns, or goes, a singular form of the verb go.Compare dual(def 4), plural(def 4).
Logic. of or relating to something individual, specific, or not general. (of a proposition) containing no quantifiers, as “Socrates was mortal.”

Mathematics. of or relating to a linear transformation from a vector space to itself that is not one-to-one. of or relating to a matrix having a determinant equal to zero.

Obsolete. private.
Obsolete. single.

noun Grammar.
the singular number.
a form in the singular.