| METENCEPHALA | • metencephala n. Plural of metencephalon. • METENCEPHALON n. the anterior segment of the developing vertebrate hindbrain. |
| PARACENTESES | • paracenteses n. Plural of paracentesis. • PARACENTESIS n. the tapping of body fluid. |
| PENTAVALENCE | • pentavalence n. The condition of being pentavalent. • PENTAVALENCE n. the condition of having a valency of five, also PENTAVALENCY. |
| REACCEPTANCE | • reacceptance n. Acceptance again of something previously rejected. • re-acceptance n. Archaic spelling of reacceptance. |
| SPERMATHECAE | • spermathecae n. Plural of spermatheca. • SPERMATHECA n. a receptacle for storing spermatozoa in insects. |
| TELENCEPHALA | • telencephala n. Plural of telencephalon. • TELENCEPHALON n. the anterior subdivision of the embryonic forebrain or corresponding part of the adult forebrain. |
| EPICHEIREMATA | • epicheiremata n. Plural of epicheirema. • EPICHEIREMA n. a syllogism confirmed by an incidental proposition. |
| PENTAVALENCES | • PENTAVALENCE n. the condition of having a valency of five, also PENTAVALENCY. |
| REACCEPTANCES | • reacceptances n. Plural of reacceptance. |
| ACCEPTABLENESS | • acceptableness n. The quality of being acceptable, or suitable to be favorably received; acceptability. • ACCEPTABLENESS n. the quality of being acceptable. |
| HYPERCATALEXES | • HYPERCATALEXIS n. the state of being hypercatalectic. |
| PENTAVALENCIES | • PENTAVALENCY n. the condition of having a valency of five, also PENTAVALENCE. |
| PREANAESTHETIC | • preanaesthetic adj. (Medicine) Administered prior to an anesthetic. • preanaesthetic n. (Medicine) A drug administered prior to anesthesia. • preanæsthetic adj. Obsolete typography of preanaesthetic. |
| SPERMATOTHECAE | • spermatothecae n. Plural of spermatotheca. • SPERMATOTHECA n. a receptacle for storing sperm. |
| ARCHAEOPTERYXES | • archaeopteryxes n. Plural of archaeopteryx. • ARCHAEOPTERYX n. a Jurassic fossil bird of the Archaeopteryx genus, with a long bony tail, sharp-toothed jaws, and wings bearing three clawed digits. |
| CARPETBAGGERIES | • CARPETBAGGERY n. the actions of a carpetbagger. |
| MESATICEPHALIES | • MESATICEPHALY n. the state of being mesaticephalic. |
| PERGAMENTACEOUS | • pergamentaceous adj. (Biology, now chiefly botany) Reminiscent of parchment. • PERGAMENTACEOUS adj. parchment-like, also PERGAMENEOUS. |
| PREANAESTHETICS | • preanaesthetics n. Plural of preanaesthetic. • PREANAESTHETIC n. a drug administered prior to an anaesthetic, also PREANESTHETIC. |