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(gō-nad″ŏ-tok′sik) [gonado- + toxic] Of certain forms of cancer chemotherapy, damaging to oogenesis or spermatogenesis; capable of diminishing fertility.

gonadotrophic, gonadotropic

(gŏn″ă-dō-trŏf′ĭk) [″ + trophe, nourishment] Rel. to stimulation of the gonads.

gonadotropin, gonadotrophin

(gō-nad″ŏ-trō′pĭn, gō-nad″ŏ-trō′fĭn) [gonado- + -tropin] A gonad-stimulating hormone, such as luteinizing hormone (LH) or follicle-stimulating hormone (FSH). SYN: gonadotropic hormone.

human chorionic g. ABBR: hCG. A hormone, secreted in early pregnancy by the trophoblasts of the fertilized ovum, that maintains the corpus luteum during early pregnancy, stimulating it to secrete both estrogen and progesterone. Laboratory tests for hCG in maternal blood or urine are used as pregnancy tests and in follow-up assessments after treatment for hydatid mole and choriocarcinoma.

human menopausal g. ABBR: hMG. A purified form of the pituitary gonadotropins FSH and LSH. It may be used therapeutically to treat infertility, hypogonadotropic hypogonadism, polycystic ovary disease, and other conditions. In the management of infertility, it is particularly used for women with ovulatory difficulties, in whom it stimulates follicular growth and maturation, ovulation, and development of the corpus luteum.


(gō″nē-om′ĕt-er) [Gr. gōnia, angle + -meter] An instrument to measure joint movements and angles. Various sizes and types of goniometers are available, including finger goniometers, bubble goniometers, gravity goniometers, and recording electrogoniometers. SYN: arthrometer. SEE: illus.




These goniometers are measuring a patient's elbow at extension and flexion.


bubble g. Inclinometer (2).


(gō′nē-on″, gō′nē-ă) pl. gonia [Gr. gōnia, a corner, angle] The lowest and most lateral point of the angle of the mandible or lower jaw.

gonio photography

(gōn′ē-ō) [gonio(scope)] Photography of the anterior chamber of the eye with a gonioscope.


(gō′nē-ō-skōp) [″ + skopein, to examine] An instrument for inspecting the angle of the anterior chamber of the eye and for determining ocular motility and rotation.


Inspection of the anterior chamber of the eye using a gonioscope.

indentation g. A means of examining the anterior chamber of the eye in proven or suspected glaucoma, in which a small lens is pressed on the cornea, moving fluid from the anterior chamber toward the periphery of the iris and trabecular meshwork. The displacement of fluid toward the margins of the anterior chamber allows the examiner to see if the iris is stuck to the meshwork or just resting upon it.


(gō″nē-ŏt′ō-mē) [″ + tome, incision] A surgical procedure ...

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