nucleus Synonyms

core cell nucleus sperm spermatozoon spore substance testicle triton umbilicus fundamentals focal point cornerstone nerve center depths ovule seed ovum pith pivot point polestar principle quiddity quintessence radix roe root rudiment seat lens nucleus nitty-gritty core group nuclear magnetic resonance center of gravity mitochondrion proton nucleosynthesis egg cell antihelion center of attention Central Point epicenter penetralium megaspore linux baryon nucleon karyon organelle antibaryon