| cleavage stage, ovum | The embryo in its earliest stage, lasting from the first mitotic division of the fertilised ovum into two blastomeres to the formation of the morula, a compact mass of blastomeres. (12 Dec 1998) |
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| cold stage | The stage of chill in a malarial paroxysm. (05 Mar 2000) |
| placental stage of labour | The part of labour from the birth of the baby until the placenta (afterbirth) and foetal membranes are delivered. Also called the third stage of labour. (12 Dec 1998) |
| preconceptual stage | In psychology, the stage of development in an infant's life, prior to actual conceptual thinking, in which sensorimotor activity predominates. (05 Mar 2000) |
| prodromal stage | incubation period |
| second stage of labour | <obstetrics> The part of labour from the full dilatation of the cervix until the baby is completely out of the birth canal. The second stage of labour is also called the stage of expulsion. (12 Dec 1998) |
| specimen stage | <microscopy> The part of the microscope which supports the specimen holder and specimen in the microscope, and can be moved in a plane perpendicular to the optical axis from outside the column. (05 Aug 1998) |
| stage | <oncology> The extent to which cancer has spread from its original site to other parts of the body. Usually denoted by a number from Stage 1 (least severe) to Stage 4 (more advanced). Different lymphoma types have different criteria for staging. (12 May 1997) |
| stage mechanical | <microscopy> A small fixture, either built into the light microscope stage or attached separately, it holds the specimen slide and has two horizontal screw adjustments at right angles to each other. The screw motions permit the specimen to be moved as desired. The quantitative type has vermer scales for reading the amount of displacement to 0.1 mm. This stage is sometimes called the traversing stage. (05 Aug 1998) |
| stage micrometre | <microscopy> A graduated scale used as a standard on the stage of a light microscope for calibrating an eyepiece micrometre, also for determining the magnification of a set-up in photomicrography, etc. (05 Aug 1998) |
| stage of dilatation | The part of labour when the cervix dilates fully (to 10 centimeters). Also called the first stage of labour. (12 Dec 1998) |
| stage of expulsion | See: Second stage of labour. (12 Dec 1998) |
| stage of invasion | incubation period |
| defervescent stage | Falling of an elevated temperature; abatement of fever. Origin: L. De-fervesco, to cease boiling, fr. De-neg. + fervesco, to begin to boil (05 Mar 2000) |
| imperfect stage | A mycological term used to describe the asexual life cycle phase of a fungus. See: anamorph. (05 Mar 2000) |