Speakur

Word Pronunciation & Dictionary

zepto-

/ˈzɛp.toʊ̯-/

Word Rarity Very rare

Frequency: Zipf frequency 0.00 in modern English

Syllables
zep-to-
IPA
/ˈzɛp.toʊ̯-/
16
Scrabble Score
5
Letters
2
Syllables
5
Unique Chars

Meaning

prefix

In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 10⁻²¹ (short scale sextillionth or long scale trilliardth).

Etymology

From Ancient Greek ἑπτᾰ́ (heptắ, “seven”), for the seventh order of 10⁻³. The final o conforms to the finals vowel of the SI series from micro- downwards; the letter z was added, as a start in a series of terms running backwards through the alphabet.

Origin

Word Breakdown

  • Root: ἑπτᾰ́

Regional Pronunciation

  • American English: /ˈzɛp.toʊ̯-/
  • British English: /ˈzɛp.təʊ̯-/

Derived Forms

zeptoampere zeptobecquerel zeptobel zeptocandela zeptoelectronvolt zeptofarad zeptogram zeptogray zeptohenry zeptojoule zeptokelvin zeptolux

Frequently Paired Words

mul:z-

Antonyms

zetta-

Questions

How do you pronounce zepto-?
The recorded pronunciation is /ˈzɛp.toʊ̯-/.
What does zepto- mean?
In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 10⁻²¹ (short scale sextillionth or long scale trilliardth).
Where does zepto- come from?
It is traced to Ancient Greek.

How to pronounce zepto-

  1. Open the pronunciation page — Open the Speakur entry for “zepto-”.
  2. Read the phonetic spelling — Read the IPA spelling (/ˈzɛp.toʊ̯-/) so you know which sounds to aim for.
  3. Play the audio — Click Play to hear reference audio for “zepto-”.
  4. Repeat and practice — Say “zepto-” aloud, matching stress and vowels until it feels natural.