Speakur

Word Pronunciation & Dictionary

yocto-

/ˈjɑk.toʊ̯-/

Word Rarity Very rare

Frequency: Zipf frequency 1.10 in modern English

Syllables
yoc-to-
IPA
/ˈjɑk.toʊ̯-/
10
Scrabble Score
5
Letters
2
Syllables
4
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 10⁻²⁴ short scale septillionth or long scale quadrillionth).

Etymology

From Ancient Greek ὀκτώ (oktṓ, “eight”), for the eighth order of 10⁻³. The letter y was added, as the second term in a series running backwards through the alphabet.

Origin

Word Breakdown

Regional Pronunciation

  • American English: /ˈjɑk.toʊ̯-/
  • British English: /ˈjɒk.təʊ̯-/

Derived Forms

yoctoampere yoctobecquerel yoctocoloumb yoctofarad yoctogram yoctogray yoctohenry yoctojoule yoctometer yoctometre yoctosecond

Frequently Paired Words

mul:y-

Antonyms

yotta-

Questions

How do you pronounce yocto-?
The recorded pronunciation is /ˈjɑk.toʊ̯-/.
What does yocto- mean?
In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 10⁻²⁴ short scale septillionth or long scale quadrillionth).
Where does yocto- come from?
It is traced to Ancient Greek.

How to pronounce yocto-

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