| STD | 1) Sexual Transmitted Disease 2) STanDards |
|---|---|
| STDs | Sexual Transmitted Diseases [Chap 88, HP 534-43] |
| BSH | benign sexual headache |
| CSP | carotid sinus pressure; cavum septi pellucidi; cell surface protein; cerebrospinal protein; Chartere... |
| ISD | immunosuppressive drug; Information Services Division; inhibited sexual desire; interstimulus distan... |
| sexual partners | Married or single individuals who share sexual relations. (12 Dec 1998) |
|---|---|
| sexual perversion | A sexual practice that is biologically atypical, considered morally wrong, or legally prohibited. See: bestiality, pedophilia. Synonym: sexual perversion. (05 Mar 2000) |
| sexual potency | The ability to carry out and consummate sexual intercourse, usually referring to the male. (05 Mar 2000) |
| sexual preference | The biologic sex preferred in one's sexual partners. (05 Mar 2000) |
| sexual reproduction | The process where two cells (gametes) fuse to form one hybrid, fertilizedcell, results in a new genome that is different than that of either parent. (09 Oct 1997) |
| sexual selection | A form of natural selection in which, according to Darwin's theory, the male or female is attracted by certain characteristics, form, colour, behaviour, etc., in the opposite sex; thus modifications of a special nature are brought about in the species. (05 Mar 2000) |
| sterilization, sexual | Procedures for the purpose of rendering individuals incapable of reproduction. (12 Dec 1998) |
| activity | 1. The state of being active, the ability to produce some effect, the extent of some function or action. 2. <chemistry> A thermodynamic quantity that represents the effective concentration of a solute in a nonideal solution, if concentrations are replaced by activities, the equations for equilibrium constants, electrode potentials, osmotic pressure, boiling point elevation, freezing point depression and vapour pressures of volatile solutes are converted from approximations that hold only for dilute solutions to exact equations that hold for all concentrations. The activity is equal to the product of the concentration and the activity coefficient, a dimensionless number measuring deviation from nonideality. Symbol a. The potential or true thermodynamic activity of a substance, as opposed to its molar concentration. 3. <radiobiology> The number of nuclear transitions or disintegrations occurring in a given quantity of radioactive material per unit time. The SI unit of activity is s-1. The special name for the unit of activity is becquerel (Bq). The previously used special unit of activity, curie (Ci), is being replaced by the becquerel. 1 Bq = 2.7 x E-11 Ci. 1 Ci = 3.7 x E10 Bq. 4. Optical activity. (16 Dec 1997) |
| activity coefficient | <chemistry> The factor by which the value of a concentration of a solute must be multiplied to determine its true thermodynamic activity. (06 May 1997) |
| activity cycles | Bouts of physical irritability or movement alternating with periods of quiescence. It includes biochemical activity and hormonal activity which may be cellular. These cycles are shorter than 24 hours and include sleep-wakefulness cycles and the periodic activation of the digestive system. (12 Dec 1998) |
| activity, drug | A measure of the physiological response a drug produces in the body. A less active drug produces less response (and visa versa). (12 Dec 1998) |
| blocking activity | The repression or elimination of electrical activity in the brain by the arrival of a sensory stimulus. (05 Mar 2000) |
| blood bactericidal activity | Native bactericidal property of blood due to normally occurring antibacterial substances such as beta lysin, leukin, etc. (12 Dec 1998) |
| melanoma growth stimulatory activity | Cytokine of the C X C subfamily. Potent mitogen. Activates and is chemotactic for, neutrophils. (18 Nov 1997) |
| water activity | <chemistry> An expression of the relative availability of water in a substance. Pure water has an water activity of 1.000. The water activity of a solution is one-hundredth its relative humidity. (09 Oct 1997) |