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4. (Anat. & Zoˆl.) Any marked prominence or projecting part, especially of a bone; anapophysis.

5. (Law) The whole course of proceedings in a cause real or personal, civil or criminal, from the beginning to the end of the suit; strictly, the means used for bringing the defendant into court to answer to the action; -- a generic term for writs of the class called judicial.

Deacon's process [from H. Deacon, who introduced it] (Chem.), a method of obtaining chlorine gas by passing hydrochloric acid gas over heated slag which has been previously saturated with a solution of some metallic salt, as sulphate of copper. -- Final process (Practice), a writ of execution in an action at law. Burrill. -- In process, in the condition of advance, accomplishment, transaction, or the like; begun, and not completed. -- Jury process (Law), the process by which a jury is summoned in a cause, and by which their attendance is enforced. Burrill. -- Leblanc's process (Chem.), the process of manufacturing soda by treating salt with sulphuric acid, reducing the sodium sulphate so formed to sodium sulphide by roasting with charcoal, and converting the sodium sulphide to sodium carbonate by roasting with lime. -- Mesne process. See under Mesne. -- Process milling, the process of high milling for grinding flour. See under Milling. -- Reversible process (Thermodynamics), any process consisting of a cycle of operations such that the different operations of the cycle can be performed in reverse order with a reversal of their effects.

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Pro*ces"sion (?), n. [F., fr. L. processio. See Proceed.]

1. The act of proceeding, moving on, advancing, or issuing; regular, orderly, or ceremonious progress; continuous course. Bp. Pearson.

That the procession of their life might be

More equable, majestic, pure, and free.

Trench.

2. That which is moving onward in an orderly, stately, or solemn manner; a train of persons advancing in order; a ceremonious train; a retinue; as, a procession of mourners; the Lord Mayor's procession.

Here comes the townsmen on procession.

Shak.

3. (Eccl.) An orderly and ceremonial progress of persons, either from the sacristy to the choir, or from the choir around the church, within or without. Shipley.

4. pl. (Eccl.) An old term for litanies which were said in procession and not kneeling. Shipley.

Procession of the Holy Ghost, a theological term applied to the relation of the Holy Spirit to the Father and the Son, the Eastern Church affirming that the Spirit proceeds from the Father only, and the Western Church that the Spirit proceeds from the Father and the Son. Shipley. -- Procession week, a name for Rogation week, when processions were made; Cross-week. Shipley.

Pro*ces"sion, v. t. (Law) To ascertain, mark, and establish the boundary lines of, as lands. [Local, U. S. (North Carolina and Tennessee).] "To procession the lands of such persons as desire it." Burrill.

Pro*ces"sion, v. i. To march in procession. [R.]

Pro*ces"sion, v. i. To honor with a procession. [R.]

Pro*ces"sion*al (?), a. Of or pertaining to a procession; consisting in a procession.

The processional services became more frequent.

Milman.

Pro*ces"sion*al, n. [F. processionnal, LL. processionale.]

1. (R. C. Ch.) A service book relating to ecclesiastical processions. J. Gregory.

2. A hymn, or other selection, sung during a church procession; as, the processional was the 202d hymn.

Pro*ces"sion*al*ist, n. One who goes or marches in a procession. [R.]

Pro*ces"sion*a*ry (?), a. [Cf. LL. processionarius, F. processionnaire.] Pertaining to a procession; consisting in processions; as, processionary service.

Processionary moth (Zoˆl.), any moth of the genus Cnethocampa, especially C. processionea of Europe, whose larvÊ make large webs on oak trees, and go out to feed in regular order. They are covered with stinging hairs.

Pro*ces"sion*er (?), n.