Glossary of terms used on this site
Glossary of biology.
Glossaries
Term | Main definition |
---|---|
Hylonomus |
Glossaries - Biology glossary
one of the earliest reptiles |
Hylonomus |
Glossaries - Biology glossary
one of the earliest reptiles |
hyoid bone |
Glossaries - Biology glossary
lies below the mandible in the front of the neck |
hyperextension |
Glossaries - Biology glossary
extension past the regular anatomical position |
hyperglycemia |
Glossaries - Biology glossary
high blood sugar level |
hyperopia |
Glossaries - Biology glossary
(also, farsightedness) visual defect in which the image focus falls behind the retina, thereby making images in the distance clear, but close-up images blurry |
hyperplasia |
Glossaries - Biology glossary
abnormally high cell growth and division |
hyperpolarization |
Glossaries - Biology glossary
change in the membrane potential to a more negative value |
hypersensitivities |
Glossaries - Biology glossary
spectrum of maladaptive immune responses toward harmless foreign particles or self antigens; occurs after tissue sensitization and includes immediate-type (allergy), delayed-type, and autoimmunity |
hyperthermophile |
Glossaries - Biology glossary
organism that grows at temperatures between 80–122 °C |
hyperthyroidism |
Glossaries - Biology glossary
overactivity of the thyroid gland |
hypha |
Glossaries - Biology glossary
fungal filament composed of one or more cells |
hypocotyl |
Glossaries - Biology glossary
embryonic axis above the cotyledons |
hypoglycemia |
Glossaries - Biology glossary
low blood sugar level |
hypophyseal portal system |
Glossaries - Biology glossary
system of blood vessels that carries hormones from the hypothalamus to the anterior pituitary |