| bicycling | The use of a bicycle for transportation or recreation. It does not include the use of a bicycle in studying the body's response to physical exertion (bicycle ergometry test see exercise test). (12 Dec 1998) |
|---|---|
| bicyclo compounds, heterocyclic | A class of saturated compounds consisting of two rings only, having two or more atoms in common, containing at least one hetero atom, and that take the name of an open chain hydrocarbon containing the same total number of atoms. (12 Dec 1998) |
| bid | To be taken twice a day (morning and evening). (27 Sep 1997) |
| bidactyly | Abnormality in which the medial digits are lacking, with only the first and fifth represented. See: lobster-claw deformity, ectrodactyly. Origin: bi-+ G. Daktylos, finger (05 Mar 2000) |
| biddy | A name used in calling a hen or chicken. Origin: Etymology uncertain. Source: Websters Dictionary (01 Mar 1998) |
| BIDE | <epidemiology> Birth, Immigration, Death, Emigration: the four demographic processes which might act on a population compartment in a typical compartmental model. (05 Dec 1998) |
| bidentate | <botany> Having two teeth or two toothlike processes; two-toothed. Source: Websters Dictionary (01 Mar 1998) |
| bidet | A tub for a sitz bath, having also an attachment for giving vaginal or rectal infusions. Origin: Fr. A small horse (05 Mar 2000) |
| bidirectional replication | A type of DNA replication where replication is moving along in both directions from the starting point. This creates two replication forks, moving in opposite directions. (09 Oct 1997) |
| bidirectional ventricular tachycardia | Ventricular tachycardia in which the QRS complexes in the electrocardiogram are alternately mainly positive and mainly negative; many such cases may represent ventricular tachycardia with alternating forms of aberrant ventricular conduction. (05 Mar 2000) |
| bidiscoidal | Resembling, or consisting of, two disks. (05 Mar 2000) |
| bidiscoidal placenta | A placenta with two separate disc-shaped portions attached to opposite walls of the uterus, normal for certain monkeys and shrews, and occasionally found in humans. (05 Mar 2000) |
| BIDS | Acronym for brittle hair, impaired intelligence, decreased fertility, and short stature; usually manifested as an inherited deficiency of a high-sulfur protein. (05 Mar 2000) |
| biduous | Rarely used term denoting of two days' duration. Origin: L. Biduus, lasting two days, fr. Bi-+ dies, day (05 Mar 2000) |
| Biebl | M. See: Biebl loop. (05 Mar 2000) |