(astronomy) Any sudden brightening of a previously inconspicuous star.

Alternative form of nondeterminism

(computing theory) A notional ability always to choose the most favorable option, in constant time.

Anew, afresh, from the beginning; without consideration of previous instances, proceedings or determinations.

anew (from the beginning)

A potential goal or requirement which is explicitly excluded from the scope of a project.

An essential or indispensable element, condition, or ingredient.

(chemistry) Any of the elements of group 18 of the periodic table, being monatomic and (with very limited exceptions) inert.

(transitive, intransitive) To incline the head up and down, as to indicate agreement. / (transitive, intransitive) To briefly incline the head downwards as a cursory greeting.

An instance of inclining the head up and down, as to indicate agreement, or as a cursory greeting. / A reference or allusion to something. / A nomination. / (figuratively) Approval.