1. A radioactive transuranic element produced by bombarding plutonium with neutrons
   - einsteinium, E, atomic number 99

1. The base of the natural system of logarithms; approximately equal to 2.718282... 
2. The 5th letter of the Roman alphabet
   - E

1. A fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body
   - vitamin E, tocopherol 
2. The cardinal compass point that is at 90 degrees
   - east, due east, eastward

Type of: alphabetic character, antioxidant, cardinal compass point, fat-soluble vitamin, letter, letter of the alphabet, metal, metallic element, transcendental number

Part of: Latin alphabet, Roman alphabet

Encyclopedia: E E, moj narode E, Gordon Rupp

• genus Dennstaedtia
• genus Dentaria
• genus Deparia
• genus Dermacentor
• genus Dermatobia
• genus Dermochelys
• genus Derris
• genus Descurainia
• genus Desmanthus
• genus Desmidium
• genus Desmodium
• genus Desmodus
• genus Desmograthus
• genus Deutzia
• genus Diacalpa
• genus Diadophis
• genus Dialeurodes
• genus Dianthus
• genus Diapensia
• genus Diapheromera
• genus Dicamptodon
• genus Dicentra
• genus Diceros
• genus Dichondra
• genus Dicksonia