Embryo 7 weeks after conception.jpg
A human embryo, seven weeks old
or nine weeks' gestational age
Anatomical terminology

An embryo is an early stage of development of a multicellular diploid eukaryotic organism. In general, in organisms that reproduce sexually, an embryo develops from a zygote, the single cell resulting from the fertilization of the female egg cell by the male sperm cell. The zygote possesses half the DNA from each of its two parents. In plants, animals, and some protists, the zygote will begin to divide by mitosis to produce a multicellular organism. The result of this process is an embryo.

In human pregnancy, a developing fetus is considered as an embryo until the ninth week, fertilization age, or eleventh-week gestational age. After this time the embryo is referred to as a fetus.[1]


First attested in English in the mid-14c., the word embryon derives from Medieval Latin embryo, itself from Greek ἔμβρυον (embruon), lit. "young one",[2] which is the neuter of ἔμβρυος (embruos), lit. "growing in",[3] from ἐν (en), "in"[4] and βρύω (bruō), "swell, be full";[5] the proper Latinized form of the Greek term would be embryum.

Other Languages
Afrikaans: Embrio
العربية: جنين
ܐܪܡܝܐ: ܥܘܠܐ
asturianu: Embrión
Avañe'ẽ: Mitãñepyrũ
azərbaycanca: Embrion
Bân-lâm-gú: Phoe-thai
беларуская: Эмбрыён
беларуская (тарашкевіца)‎: Эмбрыён
български: Ембрион
bosanski: Zametak
català: Embrió
Cebuano: Embryo
čeština: Embryo
dansk: Embryon
Deutsch: Embryo
eesti: Embrüo
Ελληνικά: Έμβρυο
español: Embrión
Esperanto: Embrio
euskara: Enbrioi
فارسی: رویان
français: Embryon
Gaeilge: Suth
galego: Embrión
한국어: 배 (생물학)
हिन्दी: भ्रूण
hrvatski: Zametak
Bahasa Indonesia: Embrio
italiano: Embrione
Basa Jawa: Embrio
ქართული: ჩანასახი
қазақша: Эмбрион
Kreyòl ayisyen: Abriyon
Кыргызча: Түйүлдүк
Latina: Embryo
latviešu: Embrijs
Lëtzebuergesch: Embryo
lietuvių: Gemalas
magyar: Embrió
മലയാളം: ഭ്രൂണം
मराठी: भ्रूण
Bahasa Melayu: Embrio
Nederlands: Embryo
norsk: Embryo
occitan: Embrion
oʻzbekcha/ўзбекча: Embrion
ਪੰਜਾਬੀ: ਭਰੂਣ
Piemontèis: Embrion
polski: Zarodek
português: Embrião
română: Embrion
русский: Эмбрион
Scots: Embryo
Simple English: Embryo
slovenčina: Embryo
slovenščina: Zarodek
کوردی: ئاولەمە
српски / srpski: Ембрион
srpskohrvatski / српскохрватски: Zametak
Basa Sunda: Émbrio
suomi: Alkio
svenska: Embryo
Tagalog: Embryo
தமிழ்: முளையம்
тоҷикӣ: Ҷанин
Türkçe: Embriyo
українська: Ембріон
اردو: جنین
Tiếng Việt: Phôi
吴语: 胚胎
粵語: 胚胎
中文: 胚胎