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e

e

7 9.8
A number about 2.718 used in math for continuous growth
  • noun
  • /iː/
  • Specialized
translation icon : e
  • You're going to take expected value of E to the two TX.
  • the constant e
  • e =

So this is really one over E to the Infinity power.

Examples

  • So this is really one over E to the Infinity power.

  • One drop, which gave a value of e that was 40% low, was also excluded.

    Academic text (1997)
  • His mathematical legacy includes, but is not limited to, the number e, or 2.7182818284590452...

    Fiction book (2002)
  • Say you have the integral of E to the ax DX.

  • Each region incorporates markets for non-energy goods, C, electricity, E, and non-electric energy, N.

    Academic text (2001)
  • The decay process is n → p + e- + v → e + 0.782 MeV.

    Academic text (2012)
  • Antioxidants are substances, such as Vitamin E, beta carotene, Vitamin C, and selenium, that are known to inhibit peroxidation reactions.

    Academic text (1995)
  • In calculus, the number e is used to calculate exponential growth.

  • The ratio of the natural logarithm is defined using the constant e, approximately equal to 2.718.

  • When modeling populations, scientists often use e to describe how quickly a species can grow.

Idioms

9.8

A motto meaning 'out of many, one' used by the United States to show unity

Compounds

e-mail address
  • Texting
30 1.1

A special name people use to send and receive messages online

vitamin E
  • Specialized
10 3.4

A substance stored in body fat that helps the body make babies and protects cells from damage

e-mail message
  • Texting
6 1.0

A message sent by email over the internet

junk e-mail
  • Texting
2 2.5

Email sent to many people that contains unwanted ads

1 4.2

The day that marks the Allied victory in Europe in World War II on May 8 1945

A large salt desert in north central Iran with wide cracked salt flats

A very hot desert in eastern Iran with unusual salt and sand formations

E layer
  • Specialized
9.6

A layer of the upper atmosphere about 80 to 145 kilometres above the ground that reflects medium-length radio waves

E region
  • Specialized
8.1

Part of the upper atmosphere 50 to 90 miles above Earth that reflects medium radio waves

e-bike
  • Specialized
3.7

A bicycle with an electric motor that helps you pedal or moves without you pedalling

e-book
  • Texting
2.7

A digital book that you read on a phone, tablet, or computer

E-bomb
  • Specialized
9.9

A weapon that explodes in the air to stop electronic devices from working

E-LASIK
  • Specialized
8.1

A type of eye surgery that reshapes the cornea by creating a small flap to correct vision

e-commerce boom
  • Texting
3.5

A period when online shopping grows very quickly

e-consulting
  • Texting
6.0

A service that gives professional advice online to businesses

8.8

A fashion and makeup style with dyed hair, bold eyeliner, and fun accessories

A former mountainous area in central Italy by the Adriatic Sea now split into the regions Abruzzo and Molise

9.9

Online creators, often women, who gain followers by sharing sexual or suggestive content

e-thumb
  • Texting
7.7

An online click that shows you like or support a post

An Iranian political group that mixes left-wing and Islamic ideas and some countries call it a terrorist group

An armed group in Pakistan that wants to set up an Islamic government and works with the Taliban

A mild, funny phrase people say instead of swearing when surprised or angry

immunoglobulin E
  • Specialized
6.5

A body protein that helps cause allergic reactions and fights parasites

A holiday in some southern United States on January 19 to remember the birth of Confederate General Robert E Lee

A public holiday on January 19 in some southern US states honoring Confederate general Robert E Lee

A Pakistani organization accused of giving information about weapons to terrorists

Surface Forms

e singular
es plural

Etymology

E as a number was named by the mathematician Euler, whose name begins with 'E', and it is closely tied to the idea of exponential growth. That is why e is the special base used for steady, continuous growth and is about 2.71828.