Any nonexpendable equipment that has been fixed in place or attached to a craft, vehicle or other equipment, but which may be detached without impairing the item removed or affecting the basic function of the object to which it is fastened.

A service, in addition to transportation, rendered by carriers and others.

(botany) A fruit which includes tissue not derived from the ovary but from some adjacent tissue, as for instance, a strawberry.

(mineralogy) any mineral that is present in small amounts in a rock, but is not considered to be characteristic of the rock

A manner of breathing in an organism that supplements or temporarily replaces the principal manner of breathing.

plural of accessory fruit

plural of accessory mineral

(meteorology) A small cloud formation which is found attached to, or close by, a major cloud of one of the cloud genera, which is responsible for its development and continuance.

plural of accessory cloud

plural of accessory nerve