hyraceumThe petrified remains of hyrax urine and feces produced by the rock hyrax (“Cape hyrax”), Procavia capensis (“P. apensis”), typically found in the communal midden piles of hyrax colonies.
hyracodontidAny in the family †Hyracodontidae of extinct mammals.
hyracoidAn animal of the order Hyracoidea, i.e. a hyrax.
hyracotheriineAny of the extinct equids of the subfamily Hyracotheriinae.
hyracotheriumAny of the extinct genus †Hyracotherium of ungulates.
hyraxAny of several small, paenungulate herbivorous mammals of the family Procaviidae from the order Hyracoidea, with a bulky frame and fang-like incisors, native to Africa and the Middle East.
hysteranthousHaving the leaves emerge before the flowers have opened. It typically refers to geophytes that flower when the plant is dormant and without leaves during a dry season. This contrasts with synanthous plants that flower at the same time as the leaves are present.
hysteresisA property of a system such that an output value is not a strict function of the corresponding input, but also incorporates some lag, delay, or history dependence, and in particular when the response for a decrease in the input variable is different from the response for an increase. For example, a thermostat with a nominal setpoint of 75° might switch the controlled heat source on when the temperature drops below 74°, and off when it rises above 76°.
hysterocleisisThe surgical closure of the uterus by suturing the edges of the os.
hysterocolposigmoidectomyA major surgical procedure in which the uterus, vagina, and sigmoid colon are removed together. It is usually performed to treat advanced or recurrent pelvic cancers that have spread across these organs, with the goal of removing all visible disease in one operation.
hysterocysticRelating to the uterus and the bladder.
hysterokineticHaving a shifting (mobile) accent that falls on the suffix (alternatively, on the last syllable of the stem) in the direct case-forms, and on the case-ending, with full ablaut-grade, in the weak case-forms.
hysterologyA scientific study, or treatise on the uterus
hysterolysisSurgical operation to break up or remove adhesions in the uterus.
hysterosalpingographyAn X-ray test that uses contrast dye to examine the uterus and fallopian tubes, mainly to check their shape and whether the tubes are open, often as part of infertility evaluation.
hysterosalpingosonographyAn ultrasound-based diagnostic procedure used to evaluate the uterine cavity and fallopian tube patency by introducing fluid into the uterus and imaging its flow with sonography.
hysterosalpingostomyA surgical procedure that connects the uterus to an occluded Fallopian tube.
hysteroscopeAn instrument designed to allow visual examination of the uterus.
hysteroscopyA medical procedure where a doctor uses a thin, lighted camera inserted through the vagina and cervix to look inside the uterus to diagnose or treat uterine problems.