Word Pronunciation & Dictionary

jordan's rule

Word Rarity Rare

Frequency: Zipf frequency 3.24 in modern English

Syllables: jor-dan's rule
IPA

19

Scrabble Score

11

Letters

2

Syllables

10

Unique Chars

Meaning

name

An ecogeographic rule describing the inverse relationship between water temperature and meristic characteristics in various species of fish, including the fact that fin ray, vertebrae, or scale numbers increase with decreasing temperature.

name

An ecogeographic rule stating that, given any species in any region, the nearest related species is not likely to be found in the same region nor in a remote region, but in a neighbouring district separated from the first by a barrier of some sort.

Etymology

Named after American scientist David Starr Jordan (1851–1931).

Synonyms

Jordan's law

Questions

What does jordan's rule mean?: An ecogeographic rule describing the inverse relationship between water temperature and meristic characteristics in various species of fish, including the fact that fin ray, vertebrae, or scale numbers increase with decreasing temperature.
Where does jordan's rule come from?: Named after American scientist David Starr Jordan (1851–1931).

How to pronounce jordan's rule

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