| processus vocalis cartilaginis arytenoidei | The lower end of the anterior margin of the arytenoid cartilage to which the vocal cord is attached. Synonym: processus vocalis cartilaginis arytenoidei, vocal process. (05 Mar 2000) |
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| processus xiphoideus | <anatomy> Composed of cartilage at the inferior aspect of the sternal body. (27 Sep 1997) |
| processus zygomaticus maxillae | The rough projection from the maxilla that articulates with the zygomatic bone. Synonym: malar process, processus zygomaticus maxillae. (05 Mar 2000) |
| processus zygomaticus ossis frontalis | The massive projection of the frontal bone that joins the zygomatic bone to form the lateral margin of the orbit. Synonym: processus zygomaticus ossis frontalis. (05 Mar 2000) |
| processus zygomaticus ossis temporalis | The anterior process of the temporal bone that articulates with the temporal process of the zygomatic bone to form the zygomatic arch. Synonym: processus zygomaticus ossis temporalis. (05 Mar 2000) |
| procetofen | <chemical> 2-(4-(4-chlorobenzoyl)phenoxy)-2-methylpropionic acid-1-methylethyl ester. An antilipaemic agent which reduces both cholesterol and triglycerides in the blood. Synonym: lf 178; lipantyl. Pharmacological action: antilipaemic agents. Chemical name: Propanoic acid, 2-(4-(4-chlorobenzoyl)phenoxy)-2-methyl-, 1-methylethyl ester (12 Dec 1998) |
| prochilia | Protruding lips. Origin: pro-+ G. Cheilos, lip (05 Mar 2000) |
| prochilon | The slight projection on the free edge of the centre of the upper lip at the lower extent of the philtrum. Synonym: tuberculum labii superioris, procheilon, prochilon, tubercle of upper lip. (05 Mar 2000) |
| prochiral | Refers to an atom in a molecule (usually a carbon atom) that would become chiral if one of two identical substituents is replaced by a new ligand; i.e., an atom that has two enantiotopic groups linked to it. For example, carbon-1 of ethanol is a prochiral carbon. (05 Mar 2000) |
| prochirality | The property of being prochiral. (05 Mar 2000) |
| prochlorales | An order of gram-negative oxygenic photosynthetic bacteria containing both chlorophylls a and b, but lacking phycobilins. There are two genera: prochloron and prochlorothrix. (12 Dec 1998) |
| prochloron | A genus of prochlorales containing unicellular, spherical bacteria without a mucilaginous sheath. They are found almost exclusively as extracellular symbionts of colonial ascidians on subtropical or tropical marine shores. (12 Dec 1998) |
| prochlorophyte | A prokaryotic oxygenic phototroph that contains chlorophylls a and b but which lack phycobilins. (09 Oct 1997) |
| prochlorothrix | A genus of prochlorales occurring in unbranched chains of indefinite length and containing both chlorophylls a and b. (12 Dec 1998) |
| prochlorperazine | <chemical> A phenothiazine antipsychotic used principally in the treatment of nausea, vomiting, and vertigo. It is more likely than chlorpromazine to cause extrapyramidal disorders. Pharmacological action: antiemetics, antipsychotic agents, phenothiazine, dopamine antagonists. Chemical name: 10H-Phenothiazine, 2-chloro-10-(3-(4-methyl-1-piperazinyl)propyl)- (12 Dec 1998) |