| inia | <zoology> A South American freshwater dolphin (Inia Boliviensis). It is ten or twelve feet long, and has a hairy snout. Source: Websters Dictionary (01 Mar 1998) |
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| iniac | Relating to the inion. Synonym: inial. (05 Mar 2000) |
| iniad | In a direction toward the inion. Origin: L. Ad, to (05 Mar 2000) |
| inial | <anatomy> Pertaining to the inion. Source: Websters Dictionary (01 Mar 1998) |
| iniencephaly | Malformation consisting of a cranial defect at the occiput, with the brain exposed; often in combination with a cervical rachischisis and retroflexion. Origin: G. Inion, back of the head, + enkephalos, brain (05 Mar 2000) |
| inion | <anatomy> The external occipital protuberance of the skull. Origin: NL, fr. Gr. 'inion the back of the head. Source: Websters Dictionary (01 Mar 1998) |
| iniopagus | Synonym: craniopagus occipitalis. Origin: inion + G. Pagos, fixed (05 Mar 2000) |
| iniops | Synonym: janiceps asymmetrus. Origin: inion + G. Ops, eye, face (05 Mar 2000) |
| inirritable | Not irritable; especially. <physiology> Incapable of being stimulated to action, as a muscle. Inirritabil"ity. Origin: Pref. In- not + irritable: cf. F. Inirritable. Source: Websters Dictionary (01 Mar 1998) |
| initial | Pertaining to the very first stage of any process. Origin: L. Initialis, from initium = beginning (18 Nov 1997) |
| initial cell | Actively dividing plant cell in a meristem. at each division one daughter cell remains in the meristem as a new initial cell and the other is added to the growing plant body. Animal equivalent is a stem cell (potentially confusing terminology in plants). (18 Nov 1997) |
| initial contact | The first meeting of opposing teeth upon elevation of the mandible toward the maxillae, the initial occlusal contact of opposing teeth when the jaw is closed. (05 Mar 2000) |
| initial dose | A comparatively large dose given at the beginning of treatment to get the patient under the influence of the drug. Synonym: loading dose. (05 Mar 2000) |
| initial haematuria | The presence of blood only in the first fraction of voided urine, usually indicating a urethral or prostatic source of bleeding. (05 Mar 2000) |
| initial heat | The first burst of heat produced after the beginning of a muscle twitch, described by A. V. Hill. (05 Mar 2000) |