As nouns the difference between ovum and ovisac
is that ovum is (label) the female gamete in animals; the egg cell while ovisac is a graafian follicle; any sac containing an ovum or ova.
ovum
English
Noun
(ova)
(label) The female gamete in animals; the egg cell.
Synonyms
* megagamete
Hypernyms
* gamete
Coordinate terms
* spermatozoon
Related terms
{{rel3, oval
, Ovaltine
, ovary
, ovate
, oviparous
, ovo-lacto-vegetarian
, ovoid
, ovulate}}
ovisac
English
Noun
(
en noun)
A Graafian follicle; any sac containing an ovum or ova.
The inner layer of the fibrous wall of a Graafian follicle.
(
Webster 1913)