Definition of year class in English:

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year class

Entry from British & World English dictionary

noun

Zoology
The individual animals of a particular species (especially a fish) that were born in any one year.
Example sentences
  • The distribution of carapace length in each year class was divided into quartiles.
  • Thus embryo diameter may be a factor in recruitment success of that year class.
  • They refused to slow down because they had seen lots of little fish coming in - a good year class.
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