nucleus Synonyms

core essence focus foundation cell nucleus germ heart hub kernel pivot focal point seed crux center centerpiece fundamentals cornerstone nerve center depths lens nucleus nitty-gritty central mass baryon nucleon anlage karyon umbilicus triton radix roe root rudiment seat semen sperm spermatozoon spore substance testicle linux organelle main part inner core megaspore core group epicenter nuclear magnetic resonance center of gravity mitochondrion proton