- formative yolk
- the part of the ovum from which the embryo is developed, as in birds.
Medical dictionary. 2011.
formative yolk
Look at other dictionaries:
yolk — /joʊk / (say yohk) noun 1. the yellow and principal substance of an egg, as distinguished from the white. 2. Biology that part of the contents of the egg of an animal which enters directly into the formation of the embryo (formative yolk or… …
yolk — also yoke noun Etymology: Middle English yolke, from Old English geoloca, from geolu yellow more at yellow Date: before 12th century 1. a. the yellow spheroidal mass of stored food that forms the inner portion of the egg of a bird or reptile and… … New Collegiate Dictionary
accessory yolk — the part of the yolk that serves for the nutrition of the formative portion … Medical dictionary
form´a|tive|ness — form|a|tive «FR muh tihv», adjective, noun. –adj. 1. having to do with formation or development; forming; molding: »Home and school are the chief formative influences in a child s life. 2. Grammar. used to form words. Words are often made from… … Useful english dictionary
form´a|tive|ly — form|a|tive «FR muh tihv», adjective, noun. –adj. 1. having to do with formation or development; forming; molding: »Home and school are the chief formative influences in a child s life. 2. Grammar. used to form words. Words are often made from… … Useful english dictionary
form|a|tive — «FR muh tihv», adjective, noun. –adj. 1. having to do with formation or development; forming; molding: »Home and school are the chief formative influences in a child s life. 2. Grammar. used to form words. Words are often made from other words by … Useful english dictionary
Ovum — For other uses, see Ovum (disambiguation). Ovum A human ovum with corona radiata surrounding it An ovum (plural ova, from the Latin word ovum meaning egg … Wikipedia
ar|chi|blast — «AHR kuh blast», noun. 1. the formative yolk in an ovum, constituting the germ. 2. = ectoderm. (Cf. ↑ectoderm) ╂[< archi + Greek blastós sprout] … Useful english dictionary
animal development — Introduction the processes that lead eventually to the formation of a new animal starting from cells derived from one or more parent individuals. Development thus occurs following the process by which a new generation of organisms is produced by … Universalium
Cell — The basic structural and functional unit in people and all living things. Each cell is a small container of chemicals and water wrapped in a membrane. Each cell in the human body there are 100 trillion cells in each of us contains the entire… … Medical dictionary
