per·i·sperm 
(pĕrĭ-spûrm′)
(pĕrĭ-spûrm′)n.
Botany
Botany
A layer of nutritive tissue in the seed of certain flowering plants that is derived from the nucellus and surrounds the embryo.
- soda jerk
- soda lime
- sodalist
- sodalite
- sodality
- soda niter
- soda pop
- soda water
- sodbuster
- sodden
- soddenly
- soddenness
- Soddy
- sodic
- sodium
- sodium alginate
- sodium ammonium phosphate
- sodium benzoate
- sodium bicarbonate
- sodium borate
- sodium carbonate
- sodium chlorate
- sodium chloride
- sodium citrate
- sodium cyanide