Speakur

Word Pronunciation & Dictionary

wolf number

Word Rarity Uncommon

Frequency: Zipf frequency 4.33 in modern English

Syllables
wolf num-ber
IPA
20
Scrabble Score
10
Letters
2
Syllables
10
Unique Chars

Meaning

noun

A measure of the number of sunspots and groups of sunspots present on the surface of the Sun.

Etymology

The idea of compiling the information about the sunspot number from various observers originated with Rudolf Wolf in 1848 in Zürich, Switzerland.

Inflected Forms

Wolf numbers (plural)

Synonyms

sunspot number Zürich number

Questions

What does wolf number mean?
A measure of the number of sunspots and groups of sunspots present on the surface of the Sun.
Where does wolf number come from?
The idea of compiling the information about the sunspot number from various observers originated with Rudolf Wolf in 1848 in Zürich, Switzerland.

How to pronounce wolf number

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