1. Concave on both sides
   - biconcave

See also: concave

• endogenetic
• endogenic
• endogenous
• endogenous depression
• endogenously
• endogeny
• endolymph
• endometrial
• endometrial cancer
• endometrial carcinoma
• endometriosis
• endometritis
• endometrium
• endomorph
• endomorphic
• endomorphy
• Endomycetales
• endoneurium
• endonuclease
• endoparasite
• endoparasitic
• endophyte
• endoplasm
• Endoprocta
• endorphin