qu'

Etymology
From.

Conjunction

 * 1)   that, which
 * 2)   that, which

Usage notes

 * This form is used instead of when the following word begins with a vowel sound.
 * While is quite common,  is often preferred in polite or formal writing.

Pronoun

 * 1)   what, that, whom; only

Usage notes

 * This form is used instead of when the following word begins with a vowel sound.

Usage notes

 * The apostrophe may be omitted in older manuscripts