| 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) |
|---|
| 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 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) |
| abortion rate | The number of abortions per 1000 terminated pregnancies during a given period of time. (05 Mar 2000) |
| age-specific rate | A rate for a specified age group, in which the numerator and denominator refer to the same age group. (05 Mar 2000) |
| attack rate | A cumulative incidence rate used for particular groups observed for limited periods under special circumstances, such as during an epidemic. (05 Mar 2000) |
| average flow rate | <physiology> The flow rate determined by dividing the total volume passed in a time period divided by the time period, usually quoted in mls per minute. (05 Mar 2000) |
| backup rate | A utility charge for providing occasional electricity service to replace on-site generation. (05 Dec 1998) |
| basal metabolic rate | <biochemistry, biology> The metabolic rate as measured under basal conditions: 12 hours after eating, after a restful sleep, no exercise or activity preceding test, elimination of emotional excitement and occurring in a comfortable temperature. Acronym: BMR (15 Nov 1997) |