| insomnia | Inability to sleep, abnormal wakefulness. Origin: L. Somnus = sleep (18 Nov 1997) |
|---|---|
| Wilder's law of initial value | The direction of response of a body function to any agent depends to a large degree on the initial level of that function. Synonym: law of initial value. (05 Mar 2000) |
| 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) |
| initial rate | The rate of a reaction, e.g., an enzyme-catalyzed reaction, at the early stages of the reaction such that the product(s) concentrations have not risen to a level to significantly affect the observable rate; typically, initial velocities are observed when less than 10% of the reaction's approach toward equilibrium has occurred. Synonym: initial rate. (05 Mar 2000) |
| initial velocity | The rate of a reaction, e.g., an enzyme-catalyzed reaction, at the early stages of the reaction such that the product(s) concentrations have not risen to a level to significantly affect the observable rate; typically, initial velocities are observed when less than 10% of the reaction's approach toward equilibrium has occurred. Synonym: initial rate. (05 Mar 2000) |
| law of initial value | The direction of response of a body function to any agent depends to a large degree on the initial level of that function. Synonym: law of initial value. (05 Mar 2000) |