知能指数|ちのうしすうchinoushisuu[4]nakadaka (mid-high)

1. nounintelligence quotient; IQ
   ココの知能指数ちのうしすうを調しらべるのは容易よういではない。↗

   Testing Koko's IQ is not easy.

• SynonymＩＱアイ・キューNeutralThe everyday abbreviation in common use; more colloquial and simpler than 「知能指数」.
• SynonymＩ．Ｑ．Written「Ｉ．Ｑ．」 is the dotted spelling of 「ＩＱ」, used in written/formal prose. It means the same as 「知能指数」, though the periods are usually dropped today.

Use 「知能指数」 for the formal name of the index of intellectual development; in everyday speech say 「ＩＱ」. 「Ｉ．Ｑ．」 is its dotted written variant, now usually written without the periods.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 知能ちのうの発達はったつ度合どあいを表あらわす指数しすうで、精神せいしん年齢ねんれいを実際じっさいの年齢ねんれい（生活せいかつ年齢ねんれい）で割わり百ひゃくを掛かけたもの。