Definition of: singular

(sing′gyə·lər) adjective
1. Extraordinary; remarkable; uncommon: her singular beauty.
2. Odd; unconventional; peculiar; not customary or usual: to be singular in one's dress.
3. Representing the only one of its type; unique: a singular instance.
4. Gram. Of or designating a word form which denotes one person or thing, or a class considered as a unit, as man, dog, he; not dual or plural.
5. Logic Embodying something specific or individual; not general: a singular idea. See synonyms Under EXTRAORDINARY, QUEER, RARE¹.
—noun Gram. The singular number, or a word form having this number. [<OF singuler <L singularis <singuli single]
—sin′gu·lar·ly adverb
—sin′gu·lar·ness noun