(aviation) The fin on the tail of an aircraft; it includes the rudder on its trailing edge

(physics) A grouping of isotopes of some transuranic elements that are predicted to be more stable than others due to having filled shells of protons and neutrons.

plural of dimensional stability

(algebra) Said of a group acting on a set, and with respect to an element of that set: the subgroup of the given group whose action on the given element of the set that the group acts on leaves that element fixed.

Alternative form of mood stabiliser

(automotive) An electronic system that assists in the control of car stability.

(finance, EU) A proposed international organisation that would provide financial assistance to members of the Eurozone in financial difficulty.

(algebra) A theorem which states that for each element of a given set that a given group acts on, there is a natural bijection between the orbit of that element and the cosets of the stabilizer subgroup with respect to that element.

plural of angle of vanishing stability

(nautical) Synonym of limit of positive stability