Singular meaning : (grammar) A form of a word that refers to only one person or thing. That which is not general; a specific determinate instance. Being only one of a larger population. Being the only one of the kind; unique. Distinguished by superiority: peerless, unmatched, eminent, exceptional, extraordinary. Out of the ordinary; curious. (grammar) Referring to only one thing or person. (of matrix) Having no inverse. (of transformation) Having the property that the matrix of coefficients of the new variables has a determinant equal to zero. (of a cardinal number) Not equal to its own cofinality. Each; individual. Engaged in by only one on a side; single.