e
Most frequent letter
E is the fifth letter of the English alphabet and the most common letter in English text.
In music, E is a note in the scale.
As a prefix or label, e- often stands for electronic: e-commerce, e-cigarette, e-reader.
In mathematics, e represents Euler's number, approximately 2.718, the base of natural logarithms.
The letter also appears as a grade (between D and F) and as slang for the drug ecstasy. (Capitalized E is the same letter and shares most uses.)
Increasing by constant ratio
- natural logarithmInverse of e-to-the-x
- constantFixed, unvarying quantity
- irrationalLacking sound judgment
- equationsMathematical equality statements
variables · calculus · derivatives · integrals · limit · series · infinite · base
Language's letter system
- vowelUnobstructed speech sound
- phonicsSound-based reading instruction
- spellingCorrect letter sequence
- pronunciationManner of speaking words
typography · typeface · calligraphy · script · glyph · lowercase · uppercase · serif
Of discrete data
- onlineNetwork-connected state
- internetInterconnected computer systems
- electronicRelating to circuitry devices
exponential
Increasing by constant ratio
- natural logarithmInverse of e-to-the-x
- constantFixed, unvarying quantity
- irrationalLacking sound judgment
equations · variables · calculus · derivatives · integrals · limit · series · infinite · base · notation
alphabet
Language's letter system
pronunciation · typography · typeface · calligraphy · script · glyph · lowercase · uppercase · serif · font
note
Short written record
sharp · key · scale · treble · clef · solfege · tone · octave · chord · melody
digital
Of discrete data
- onlineNetwork-connected state
- internetInterconnected computer systems
- electronicRelating to circuitry devices