- Shape; mold. [L. forma]- accolé forms (ak-ola′) SYN: appliqué forms.- appliqué forms (ap-li-ka′) a term applied to the manner in which the ring stage of Plasmodium falciparum parasitizes the marginal portion of erythrocytes. SYN: accolé forms.- arch f. the shape and contour of the dental arch, or of an orthodontic wire formed to the shape of that arch.- boat f. the less stable of two conformations assumed by 6-membered cyclic sugars (pyranoses) or cyclohexane derivatives, as opposed to chair f.. SEE ALSO: Haworth conformational formulas of cyclic sugars.- chair f. the more stable of two conformations assumed by 6-membered cyclic sugars ( e.g., the pyranoses) or cyclohexane derivatives, as opposed to boat f.. SEE ALSO: Haworth conformational formulas of cyclic sugars.- convenience f. the changes needed outside the basic outline f. to enable proper instrumentation for the cavity preparation and insertion of a dental restoration.- extension f. the extension of the cavity preparation outline f. to include areas of incipient carious lesions; this extension provides a dental restoration with margins that are self-cleansing or easily cleaned.- involution f. an irregular or atypical bacterial cell produced as a result of exposure to unfavorable conditions.- L f. L-phase variants, under variant.- outline f. the shape of the area of the tooth surface included within the cavosurface margins of the cavity preparation of a dental restoration.- posterior tooth f. the distinguishing contours of the occlusal surface of the various posterior teeth.- replicative f. (RF) 1. an intermediate stage in the replication of either DNA or RNA viral genomes that is usually double-stranded; 2. the altered, double-stranded f. to which single-stranded coliphage DNA is converted after infection of a susceptible bacterium, formation of the complementary (“minus”) strand being mediated by enzymes that were present in the bacterium before entrance of the viral (“plus”) strand.- resistance f. the shape given to a cavity preparation that enables the dental restoration to withstand masticatory forces.- retention f. the shape of a cavity preparation that prevents displacement of the dental restoration by lateral or tipping forces as well as masticatory forces.- sickle f. SYN: malarial crescent.- tooth f. the characteristics of the curves, lines, angles, and contours of various teeth which permit their identification and differentiation.- wax f. SYN: wax pattern.* * *formula
* * *form 'fȯ(ə)rm n1 a) the shape and structure of something as distinguished from its materialb) a body (as of a person) esp. in its external appearance or as distinguished from the face2) a distinguishable group of organisms used esp. to avoid taxonomic implicationsform vt to give a particular shape to: shape or mold into a certain state or after a particular model vi to become formed or shaped <a clot \formed over the cut>
* * *(form) [L. forma] 1. the characteristic of a structure or entity generally determined by its shape and size, or other external or visible feature. 2. in taxonomy, a prefix indicating that the taxon to which it is affixed is composed of organisms whose sexual phase is nonexistent or unknown; used in the classification of the Deuteromycota (Fungi Imperfecti).
Medical dictionary. 2011.