alpha-fetoprotein

noun
al·​pha-fe·​to·​pro·​tein | \ ˌal-fə-ˌfē-tō-ˈprō-ˌtēn How to pronounce alpha-fetoprotein (audio) , -ˈprō-tē-ən \

Definition of alpha-fetoprotein

: a fetal blood protein present abnormally in adults with some cancers (as of the liver) and normally in the amniotic fluid of pregnant women with high or low levels tending to be associated with certain birth defects (such as spina bifida or Down syndrome)

First Known Use of alpha-fetoprotein

1966, in the meaning defined above

Learn More About alpha-fetoprotein

Time Traveler for alpha-fetoprotein

Time Traveler

The first known use of alpha-fetoprotein was in 1966

See more words from the same year

Dictionary Entries Near alpha-fetoprotein

Alpha Eridani

alpha-fetoprotein

Alpha Geminorum

See More Nearby Entries 

Statistics for alpha-fetoprotein

Cite this Entry

“Alpha-fetoprotein.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/alpha-fetoprotein. Accessed 17 Jan. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for alpha-fetoprotein

alpha-fetoprotein

noun
variants: or α-fetoprotein or chiefly British alpha-foetoprotein or α-foetoprotein

Medical Definition of alpha-fetoprotein

: a fetal blood protein present abnormally in adults with some forms of cancer (as of the liver) and normally in the amniotic fluid of pregnant women but with very low levels tending to be associated with Down syndrome in the fetus and very high levels with neural tube defects (as spina bifida) in which the tube remains open

WORD OF THE DAY

Test Your Vocabulary

Name that Thing: Flower Edition

Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!