| PtdSer | <abbreviation> Phosphatidylserine. (05 Mar 2000) |
|---|---|
| PTE | <abbreviation> Pulmonary thromboembolism or pulmonary thromboendarterectomy. (05 Mar 2000) |
| PTEA | <abbreviation> Pulmonary thromboendarterectomy. (05 Mar 2000) |
| ptenoglossa | <zoology> A division of gastropod mollusks having the teeth of the radula arranged in long transverse rows, somewhat like the barbs of a feather. Origin: NL, fr. Gr. Feathered + tongue. Source: Websters Dictionary (01 Mar 1998) |
| ptenoglossate | <zoology> Of or pertaining to the Ptenoglossa. Source: Websters Dictionary (01 Mar 1998) |
| pter- | Ptero- Combining form meaning wing; feather. Origin: G. Pteron, wing, feather (05 Mar 2000) |
| pteranodon | <paleontology> A genus of American Cretaceous pterodactyls destitute of teeth. Several species are known, some of which had an expanse of wings of twenty feet or more. Origin: Gr. Wing + priv. +, a tooth. Source: Websters Dictionary (01 Mar 1998) |
| pteranodontia | <paleontology> A group of pterodactyls destitute of teeth, as in the genus Pteranodon. Source: Websters Dictionary (01 Mar 1998) |
| pterichthys | <paleontology> A genus of Devonian fossil fishes with winglike appendages. The head and most of the body were covered with large bony plates. See: Placodermi. Origin: NL, fr. Gr. Wing + fish. Source: Websters Dictionary (01 Mar 1998) |
| pteridine | Azinepurine; benzotetrazine; pyrazino[2,3-d]pyrimidine;a two-ring heterocyclic compound found as a component of pteroic acid and the pteroylglutamic acids (folic acids, pteropterin, etc.); simple pteridine derivatives (e.g., xanthopterin, leucopterin) occur as pigments in butterfly wings, whence the name. (05 Mar 2000) |
| pteridologist | One who is versed in pteridology. Source: Websters Dictionary (01 Mar 1998) |
| pteridology | <study> That department of botany which treats of ferns. Origin: Gr, a fern. Source: Websters Dictionary (01 Mar 1998) |
| pteridomania | <psychiatry> A madness, craze, or strong fancy, for ferns. Origin: Gr, a fern + E. Mania. Source: Websters Dictionary (01 Mar 1998) |
| Pteridophyta | <botany> Division of the plant kingdom that includes ferns, horsetails and clubmosses. (18 Nov 1997) |
| pteridophyte | <botany> Ferns. A major division of the plant kingdom, having clear alternation of generations with a dominant vascular sporophyte initially dependent upon the gametophyte which is very reduced. (12 Jan 1998) |