E

Pronunciation (US):

 Dictionary entry overview: What does E mean? 

• E (noun)
  The noun E has 5 senses:

1. a fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body
2. a radioactive transuranic element produced by bombarding plutonium with neutrons
3. the cardinal compass point that is at 90 degrees
4. the base of the natural system of logarithms; approximately equal to 2.718282...
5. the 5th letter of the Roman alphabet

  Familiarity information: E used as a noun is common.

 Dictionary entry details 

• E (noun)

Meaning:

A fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body

Classified under:

Nouns denoting substances

Synonyms:

E; tocopherol; vitamin E

Hypernyms ("E" is a kind of...):

antioxidant (substance that inhibits oxidation or inhibits reactions promoted by oxygen or peroxides)

fat-soluble vitamin (any vitamin that is soluble in fats)

Hyponyms (each of the following is a kind of "E"):

alpha-tocopheral (a potent form of vitamin E obtained from germ oils or by synthesis)

Meaning:

A radioactive transuranic element produced by bombarding plutonium with neutrons

Classified under:

Nouns denoting substances

Synonyms:

Es; einsteinium; atomic number 99; E

Hypernyms ("E" is a kind of...):

metal; metallic element (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.)

Meaning:

The cardinal compass point that is at 90 degrees

Classified under:

Nouns denoting relations between people or things or ideas

Synonyms:

due east; east; eastward; E

Hypernyms ("E" is a kind of...):

cardinal compass point (one of the four main compass points)

Meaning:

The base of the natural system of logarithms; approximately equal to 2.718282...

Classified under:

Nouns denoting quantities and units of measure

Hypernyms ("e" is a kind of...):

transcendental number (an irrational number that is not algebraic)

Meaning:

The 5th letter of the Roman alphabet

Classified under:

Nouns denoting communicative processes and contents

Synonyms:

letter e; E

Hypernyms ("E" is a kind of...):

alphabetic character; letter; letter of the alphabet (the conventional characters of the alphabet used to represent speech)

Holonyms ("E" is a member of...):

Latin alphabet; Roman alphabet (the alphabet evolved by the ancient Romans which serves for writing most of the languages of western Europe)