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1. A period in the course of a disease; a description of the extent of involvement of a disease process or the status of a patient with a specific disease, as of the distribution and extent of dissemination of a malignant neoplastic disease; also, the act of determining the s. of a disease, especially cancer. See also period. 2. The part of a microscope on which the microslide bears the object to be examined. 3. A particular step, phase, or position in a developmental process.
For psychosexual stages, see entries under phase[M.E. thr. O. Fr. estage, standing-place, fr. L. sto, pp. status, to stand]
algid s.the s. of collapse in cholera.
Arneth s.'sa differential grouping of polymorphonuclear neutrophils in accordance with the number of lobes in their nuclei, i.e., cells with 1, 2, 3, 4, or 5 (or more) lobes are designated, respectively, as class I, II, and so on. See also Arneth formula.
bell s.third s. of tooth development, wherein the cells form the inner enamel epithelium, the stratum intermedium, the stellate reticulum, and the outer enamel epithelium; the enamel organ assumes a bell shape.
bud s.first s. of tooth development; development of the primordia of the enamel organs, the tooth buds.
cap s.second s. of tooth development wherein there is development of the inner and outer enamel epithelium.
cold s.the s. of chill in a malarial paroxysm.
defervescent s. See defervescence.
end s.the late, fully developed phase of a disease; e.g., in end-stage renal disease, a shrunken and scarred kidney that may result from a variety of chronic diseases that have become indistinguishable in their effect on the kidney.
eruptive s.the stage of an exanthematous illness in which the rash appears.
exoerythrocytic s.developmental s. of the malaria parasite (Plasmodium) in liver parenchyma cells of the vertebrate host before erythrocytes are invaded. The initial generation produces cryptozoites, the next generation metacryptozoites; reinfection of liver cells from blood cells apparently does not occur. Delayed development of the sporozoite (hypnozoite) of Plasmodium vivax and P. ovale appears to be responsible for malarial relapse that may occur with these disease agents.
genital s.referring to the psychic organization derived from, and characteristic of, the Freudian genital period of the infant's psychosocial organization. See genitality. See also anality, orality.
imperfect s.a mycological term used to describe the asexual life cycle phase of a fungus. See anamorph.
incubative s.incubation period (1) latent s., prodromal s., s. of invasion;
intuitive s.in psychology, a s. of development, usually occurring between 4 and 7 years of age, in which a child's thought processes are determined by the most prominent aspects of the stimuli to which he or she is exposed, rather than by some form of logical thought.
s. of invasionincubative s
s.'s of labor See labor.
latent s.incubative s
perfect s.a mycological term used to describe the sexual life cycle phase of a fungus in which spores are formed after nuclear fusion.teleomorph
preconceptual s.in psychology, the s. of development in an infant's life, prior to actual conceptual thinking, in which sensorimotor activity predominates.
prodromal s.incubative s
resting s.the quiescent s. of a cell or its nucleus in which no karyokinetic changes are taking place.vegetative s;
Tanner s.a s. of puberty in the Tanner growth chart, based on pubic hair growth, development of genitalia in boys, and breast development in girls.
trypanosome s. See trypomastigote.
tumor s.the extent of the spread of a malignant neoplasm from its site of origin. See also TNM staging.
vegetative s.resting s
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