低てい年ねん齢れい

noun which may take the genitive case particle 'no', noun

young; of low age

Used attributively (often with の) to describe people, especially children, who are young or of a low age. Common in contexts like 低年齢児 (young children) or 低年齢化 (trend toward younger ages).

• 低てい年ねん齢れいの子こども向むけの番ばん組ぐみです。

  It's a program for young children.

• 最さい近きん、低てい年ねん齢れい化かが進すすんでいる。

  Recently, the trend toward younger ages has been progressing.