Principal
Principal Prin"ci*pal, a. [F., from L. principalis. See {Prince}.] 1. Highest in rank, authority, character, importance, or degree; most considerable or important; chief; main; as, the principal officers of a Government; the principal men of a state; the principal productions of a country; the principal arguments in a case. [1913 Webster]

Wisdom is the principal thing. --Prov. iv. 7. [1913 Webster]

2. Of or pertaining to a prince; princely. [A Latinism] [Obs.] --Spenser. [1913 Webster]

{Principal axis}. See {Axis of a curve}, under {Axis}.

{Principal axes of a quadric} (Geom.), three lines in which the principal planes of the solid intersect two and two, as in an ellipsoid.

{Principal challenge}. (Law) See under {Challenge}.

{Principal plane}. See {Plane of projection} (a), under {Plane}.

{Principal of a quadric} (Geom.), three planes each of which is at right angles to the other two, and bisects all chords of the quadric perpendicular to the plane, as in an ellipsoid.

{Principal point} (Persp.), the projection of the point of sight upon the plane of projection.

{Principal ray} (Persp.), the line drawn through the point of sight perpendicular to the perspective plane.

{Principal section} (Crystallog.), a plane passing through the optical axis of a crystal. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Synonyms:

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  • principal — principal, ale, aux [ prɛ̃sipal, o ] adj. et n. • 1119; « princier » 1080; lat. principalis « principal, du prince », de princeps I ♦ Adj. 1 ♦ Qui est le plus important, le premier parmi plusieurs. ⇒ 1. capital, essentiel, fondamental, primordial …   Encyclopédie Universelle

  • principal — prin·ci·pal 1 / prin sə pəl/ adj 1: being the main or most important, consequential, or influential their principal place of business the principal obligor 2: of, relating to, or constituting principal or a principal the principal amount of the… …   Law dictionary

  • principal — principal, ale 1. (prin si pal, pa l ) adj. 1°   Qui est le plus considérable, en parlant de personnes. Les principaux magistrats. •   Quand on bâtit une maison, quoique les maçons, les charpentiers, les plombiers, les menuisiers travaillent bien …   Dictionnaire de la Langue Française d'Émile Littré

  • principal — Principal, Estre le Principal et plus excellent, Primas partes in re aliqua agere, Principatum tenere. Pansa a esté nostre principal aide et secours, Principem habuimus Pansam. Laquelle chose est la principale et la meilleure, et la plus forte,… …   Thresor de la langue françoyse

  • Principal — may refer to: Education The head of an educational institution: *Principal (school), head of a primary or secondary school *Principal (university), chief executive of a university **Dean (education), a person with significant authority **Provost… …   Wikipedia

  • principal — PRINCIPÁL, Ă, principali, e, adj. Care are o importanţă deosebită sau cea mai mare importanţă; de căpetenie, de frunte. ♢ (gram.) Propoziţie principală (şi substantivat, f.) = propoziţie independentă dintr o frază, de care depind propoziţiile… …   Dicționar Român

  • principal — (Del lat. principālis). 1. adj. Dicho de una persona o de una cosa: Que tiene el primer lugar en estimación o importancia y se antepone y prefiere a otras. 2. Dicho de una persona: Que es la primera en un negocio o en cuya cabeza está. 3.… …   Diccionario de la lengua española

  • principal — principal, principle The spellings are occasionally confused even by the wariest users of English, the usual mistake being to use principle for the adjective principal. Principal is an adjective and noun and essentially means ‘chief’ (my… …   Modern English usage

  • principal — [prin′sə pəl] adj. [OFr < L principalis < princeps: see PRINCE] 1. first in rank, authority, importance, degree, etc. 2. that is or has to do with PRINCIPAL (n. 3) n. 1. a principal person or thing; specif., a) a ch …   English World dictionary

  • Principal — Prin ci*pal, n. 1. A leader, chief, or head; one who takes the lead; one who acts independently, or who has controlling authority or influence; as, the principal of a faction, a school, a firm, etc.; distinguished from a {subordinate}, {abettor} …   The Collaborative International Dictionary of English

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