American Heritage Dictionary
(1)
Century Dictionary
GNU Webster's 1913
WordNet
(1)
Elsewhere on the web
Predominance of estriol or estradiol is a defining trait of labor.— MedPageToday.com - medical news plus CME for physicians
Tumor cells were treated with either 17beta-estradiol (E2), a carcinogenic estrogen or 17-alpha-ethinylestradiol (EE), a weakly-carcinogenic estrogen.— CiteULike: Everyone's library
Follicle-stimulating hormone (FSH) stimulates granulosa cells to convert androgens to estradiol, and after ovulation granulosa cells then produce progesterone— PLoS ONE Alerts: New Articles
Humans have two types of oestrogen -- estradiol (E2) and estriol (E3).— Daily News & Analysis
Humans have two types of oestrogen-estradiol (E2) and estriol (E3).— Zee News : India National

American Heritage Dictionary (1)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word a few times a year.
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