Obsolete form of alto clef.

The plumage that some birds adopt for courtship and breeding

Furnished with an altar.

A philosophy and social movement that advocates the use of evidence and reasoning to determine the most effective ways to benefit others.

(mathematics) An infinite series in the form of ∑ₙ₌₀ ᪲(-1)ⁿa_n or ∑ₙ₌₀ ᪲(-1)ⁿ⁺¹a_n, where a_n>0 for all n.

(aviation) The altitude (which varies by country) above which an aircraft's barometric altimeters are set as if the sea-level atmospheric pressure were equal to 1013.25 hectopascals (regardless of the actual atmospheric conditions) and altitudes are reported as flight levels.

Alternative form of Altai Krai

Alternative form of Altai Krai

(law) To modify.

plural of alternative investment