What does luteinization mean?
Luteinization is the biological process in which cells of an ovarian follicle become lutein cells after ovulation. It normally occurs as the ruptured follicle develops into the corpus luteum, a temporary hormone-producing structure whose secretions help prepare the uterine lining for implantation and support early pregnancy. The transformation is commonly described in terms of the granulosa cells changing their morphology and producing increased amounts of progesterone. Although luteinization is essential to normal reproductive physiology, it can also occur pathologically or be manipulated in experimental settings. The word is technical rather than everyday, so readers will usually encounter it in research concerning ovarian function, endocrinology, reproductive medicine, or animal reproduction.
nounThe process by which ovarian follicular cells develop into lutein cells, usually after the release of an egg. This transformation is central to the formation and function of the corpus luteum.
- The transformation of ovarian follicular cells into lutein cells following ovulation, producing the corpus luteum and enabling progesterone secretion.
"Luteinization of the granulosa cells occurs after ovulation as the ruptured follicle develops into the corpus luteum."
"Hormonal signals trigger luteinization of the granulosa cells after the egg is released."
"The researchers measured luteinization by examining changes in hormone production and cellular morphology."
The plural is uncommon and is mainly used in scientific or comparative descriptions of multiple instances of the process.
"The study compared luteinizations occurring under different hormonal conditions."
After ovulation, the ovarian follicle transforms through luteinization into the corpus luteum, an appropriately named yellow, hormone-producing body.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does luteinization come from?
The word is formed from lutein plus the English suffix -ization, indicating a process or transformation. Lutein derives from Latin luteus, meaning “yellow,” a reference to the pigment’s characteristic color. The suffix -ization entered English through French and ultimately derives from Greek forms associated with -izein, “to make or cause to become.”
Related word forms
How luteinization is actually used
This is a specialized term used chiefly in reproductive biology, endocrinology, histology, and veterinary medicine. British English often spells it “luteinisation,” while American English generally uses “luteinization.”