(mineralogy, outdated) A mineral, (Ca,Y)₅(P,Si)₃O₁₂(OH,F), that can contain uranium or thorium. The mineral was renamed britholite-(Y) in 1966 because of its similarity to britholite and because of its yttrium-dominant composition.

(card games) An undertaking to take all thirteen tricks with the suit of the face-up card as trump.

(card games) An undertaking to take all thirteen tricks with no trump suit.

In the Jewish calendar, a year of 355 days or a leap year of 385 days; perfect year.

plural of abundant year

Alternative spelling of Aboukir

To abuse again.

Abuse that is repeated or perpetrated again.

Severe abuse.

(mathematics) The use of a mathematical notation in a way that is not formally correct but seems likely to simplify the exposition or suggest the correct intuition.