Word Pronunciation & Dictionary

e=mc²

/ˈi ˌikwəlz ɛm si ˈskwɛɹd/

Word Rarity Rare

Frequency: Zipf frequency 3.98 in modern English

Syllables
e=m-c²
IPA
/ˈi ˌikwəlz ɛm si ˈskwɛɹd/
7
Scrabble Score
3
Letters
2
Syllables
3
Unique Chars

Meaning

noun

A formulation or realization that captures a profound thought in simple terms.

Informal; Uncountable

noun

Used other than figuratively or idiomatically: E = mc²: energy equals mass times the speed of light squared.

Uncountable

Example Sentences

Etymology

Regional Pronunciation

  • American English: /ˈi ˌikwəlz ɛm si ˈskwɛɹd/
  • British English: /ˈiː ˌiːkwəlz ɛm siː ˈskwɛːd/

Usage

Phrases

Frequently Paired Words

Rhymes With

Questions

How do you pronounce e=mc²?
The recorded pronunciation is /ˈi ˌikwəlz ɛm si ˈskwɛɹd/.
What does e=mc² mean?
A formulation or realization that captures a profound thought in simple terms.
Where does e=mc² come from?
After the formula of mass–energy equivalence, an important principle discovered by the German-born theoretical physicist Albert Einstein (1879–1955). The formula entered the popular consciousness after it was included in the opening pages of the Smyth Report (1945), a widely read document that explained the United States’ nuclear weapons program to the public for the first time. Its appearance alongside a portrait of the (already well known) Einstein on a Time magazine cover the following year consolidated its fame.

How to pronounce e=mc²

  1. Open the pronunciation page — Open the Speakur entry for “e=mc²”.
  2. Read the phonetic spelling — Read the IPA spelling (/ˈi ˌikwəlz ɛm si ˈskwɛɹd/) so you know which sounds to aim for.
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  4. Repeat and practice — Say “e=mc²” aloud, matching stress and vowels until it feels natural.