The Collaborative International Dictionary of English v.0.48:
Superlative \Su`per*la"tive\, n.
1. That which is highest or most eminent; the utmost degree.
(a) The superlative degree of adjectives and adverbs;
also, a form or word by which the superlative degree
is expressed; as, strongest, wisest, most stormy,
least windy, are all superlatives.
Absolute superlative, a superlative in an absolute rather
than in a comparative or exclusive sense. See Elative.