Invoice, in′vois, n. a letter of advice of the despatch of goods, with particulars of their price and quantity.—v.t. to make an invoice of. [Prob. a corr. of envois, pl. of Fr. envoi.]

Invoke, in-vōk′, v.t. to call upon earnestly or solemnly: to implore assistance: to address in prayer. [Fr.,—L. invocāre, -ātumin, on, vocāre, to call.]

Involucre, in-vol-ū′kėr, n. (bot.) a group of bracts in the form of a whorl around an expanded flower or umbel—also Involū′crum.—ns. Invol′ucel, Involucel′lum, a secondary involucre.—adjs. In′volucral, Involū′crate, having an involucre.—n. Involū′cret. [L. involucruminvolvĕre, to involve.]

Involuntary, in-vol′un-tar-i, adj. not voluntary: not having the power of will or choice: not done willingly: not chosen.—adv. Invol′untarily.—n. Invol′untariness.

Involute, in′vo-lūt, n. that which is involved or rolled inward: a curve traced by the end of a string unwinding itself from another curve.—adjs. In′volute, -d (bot.), rolled spirally inward: turned inward, of shells.—n. Involū′tion, the action of involving: state of being involved or entangled: complicated grammatical construction: (arith.) act or process of raising a quantity to any given power. [See Involve.]

Involve, in-volv′, v.t. to wrap up: to envelop: to implicate: to include: to complicate: to overwhelm: to catch: (arith.) to multiply a quantity into itself any given number of times.—n. Involve′ment, act of involving: state of being involved or entangled. [Fr.—L. involvĕrein, upon, volvĕre, volūtum, to roll.]

Invulnerable, in-vul′nėr-a-bl, adj. that cannot be wounded.—ns. Invulnerabil′ity, Invul′nerableness.—adv. Invul′nerably.

Invultuation, in-vul-tū-ā′shun, n. the act of piercing a wax or clay image of a person that he may suffer torture and die—one of the commonest methods of witchcraft. [Low L. invultuation-eminvultare, to stab the face of—L. in, in, vultus, the face.]

Inwall. See Enwall.

Inward, in′ward, adj. placed or being within: internal: seated in the mind or soul, not perceptible to the senses, as the 'inward part' of a sacrament: (B.) intimate.—n.pl. (B.) the intestines.—adv. toward the inside: toward the interior: into the mind or thoughts.—adv. In′wardly, in the parts within: in the heart: privately: toward the centre.—n. In′wardness, internal state: inner meaning or significance: (Shak.) intimacy, familiarity.—adv. In′wards, same as Inward. [A.S. inneweard (adv.).]