| recessus suprapinealis | A variable diverticulum from the posterior portion of the third ventricle of the brain, running backward some distance above and beyond the pineal recess. Synonym: recessus suprapinealis. (05 Mar 2000) |
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| recessus triangularis | An occasional evagination of the anterior wall of the third ventricle of the brain between the anterior commissure and the diverging pillars of the fornix. Synonym: recessus triangularis. (05 Mar 2000) |
| rechabite | One of the descendants of Jonadab, the son of Rechab, all of whom by his injunction abstained from the use of intoxicating drinks and even from planting the vine. Jer. Xxxv. 2-19. Also, in modern times, a member of a certain society of abstainers from alcoholic liquors. Source: Websters Dictionary (01 Mar 1998) |
| recidivation | Relapse of a disease, a symptom, or a behavioural pattern such as an illegal activity for which one was previously imprisoned. Origin: L. Recidivus, falling back, recurring, fr. Re-cido, to fall back (05 Mar 2000) |
| recidivism | The tendency of an individual toward recidivation. Origin: L. Recidivus, recurring (05 Mar 2000) |
| recidivist | A person who tends toward recidivation. (05 Mar 2000) |
| recipe | Origin: L, imperative of recipere to take back, take in, receive. See Receive. A formulary or prescription for making some combination, mixture, or preparation of materials; a receipt; especially, a prescription for medicine. Source: Websters Dictionary (01 Mar 1998) |
| recipient | One who receives, as blood in transfusion or a tissue or organ graft. (18 Nov 1997) |
| recipiomotor | Relating to the reception of motor stimuli. Origin: L. Recipio, to receive, + motor, mover (05 Mar 2000) |
| reciprocal | 1. Recurring in vicissitude; alternate. 2. Done by each to the other; interchanging or interchanged; given and received; due from each to each; mutual; as, reciprocal love; reciprocal duties. "Let our reciprocal vows be remembered." (Shak) 3. Mutually interchangeable. "These two rules will render a definition reciprocal with the thing defined." (I. Watts) 4. Reflexive; applied to pronouns and verbs, but sometimes limited to such pronouns as express mutual action. 5. <mathematics> Used to denote different kinds of mutual relation; often with reference to the substitution of reciprocals for given quantities. See the Phrases below. <mathematics> Reciprocal equation, those terms which have the same signification, and, consequently, are convertible, and may be used for each other. Synonym: Mutual, alternate. Reciprocal, Mutual. The distinctive idea of mutual is, that the parties unite by interchange in the same act; as, a mutual covenant; mutual affection, etc. The distinctive idea of reciprocal is, that one party acts by way of return or response to something previously done by the other party; as, a reciprocal kindness; reciprocal reproaches, etc. Love is reciprocal when the previous affection of one party has drawn forth the attachment of the other. To make it mutual in the strictest sense, the two parties should have fallen in love at the same time; but as the result is the same, the two words are here used interchangeably. The ebbing and flowing of the tide is a case where the action is reciprocal, but not mutual. Origin: L. Reciprocus; of unknown origin. 1. That which is reciprocal to another thing. "Corruption is a reciprocal to generation." (Bacon) 2. <mathematics> The quotient arising from dividing unity by any quantity; thus 1/4 is the reciprocal of 4; 1/(a + b) is the reciprocal of a + b. The reciprocal of a fraction is the fraction inverted, or the denominator divided by the numerator. Source: Websters Dictionary (01 Mar 1998) |
| reciprocal anchorage | Anchorage in which the movement of one or more teeth is balanced against the movement of one or more opposing teeth. (05 Mar 2000) |
| reciprocal arm | A clasp arm or other extension used on a removable partial denture to oppose the action of some other part or parts of the appliance. (05 Mar 2000) |
| reciprocal beat | See: reciprocal rhythm. (05 Mar 2000) |
| reciprocal bigeminy | Paired beats, each pair consisting of an A-V nodal beat followed by a reciprocal beat. (05 Mar 2000) |
| reciprocal forces | In dentistry, force's whereby the resistance of one or more teeth is utilised to move one or more opposing teeth. (05 Mar 2000) |