Speakur

Word Pronunciation & Dictionary

diurnal motion

Word Rarity Rare

Frequency: Zipf frequency 2.68 in modern English

Syllables
di-ur-nal -mo-tion
IPA
16
Scrabble Score
13
Letters
5
Syllables
10
Unique Chars

Meaning

noun

The apparent westward rotation of the celestial sphere, along with the apparent westward revolution of celestial objects, around the celestial poles due to prograde (eastward) rotation of planet Earth relative to the seemingly fixed stars – completed once each sidereal day (about 23 hours, 56 minutes, 4 seconds).

Uncountable

Usage

Questions

What does diurnal motion mean?
The apparent westward rotation of the celestial sphere, along with the apparent westward revolution of celestial objects, around the celestial poles due to prograde (eastward) rotation of planet Earth relative to the seemingly fixed stars – completed once each sidereal day (about 23 hours, 56 minutes, 4 seconds).

How to pronounce diurnal motion

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  2. Read the phonetic spelling — Read the IPA spelling () so you know which sounds to aim for.
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