auxiliary

Definitions

1. 1.A helper; an assistant; a confederate in some action or enterprise.
2. 2.(Mil.) pl. Foreign troops in the service of a nation at war; (rarely in sing.), a member of the allied or subsidiary force.
3. 3.(Gram.) A verb which helps to form the voices, modes, and tenses of other verbs; -- called, also, an auxiliary verb; as, have, be, may, can, do, must, shall, and will, in English; être and avoir, in French; avere and essere, in Italian; estar and haber, in Spanish.
4. 4.(Math.) A quantity introduced for the purpose of simplifying or facilitating some operation, as in equations or trigonometrical formulæ. Math. Dict.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

Synonyms

Related questions

• What does "auxiliary" mean?
• What is another word for "auxiliary"?

Reverse-dictionary questions

Definition-first questions whose answer is auxiliary.

• What is a helper; an assistant; a confederate in some action or enterprise called?
• What is pl. Foreign troops in the service of a nation at war; (rarely in sing.), a member of the allied or subsidiary force called?
• What is a quantity introduced for the purpose of simplifying or facilitating some operation, as in equations or trigonometrical formulæ. Math. Dict called?