(じっすん)

じっすん
noun
actual size; real dimensions
1. actual size; real dimensions; true measurements
The real, measured dimensions of an object as opposed to scaled or approximate sizes. Commonly used in shopping, manufacturing, and design contexts.
実寸(じっすん)(はか)ってください。
Please measure the actual size.
オンラインで(くつ)()うときは実寸(じっすん)確認(かくにん)した(ほう)がいい。
When buying shoes online, you should check the actual measurements.
この図面(ずめん)実寸(じっすん)半分(はんぶん)のサイズで(えが)かれている。
This drawing is depicted at half the actual size.

A compound of (じつ) (actual, real) and (すん) (measurement, dimension — from the traditional unit of length). Despite the origin of (すん), the word refers to actual measurements in any unit, not just the traditional Japanese inch.

COMMON COLLOCATIONS:

  • 実寸(じっすん)サイズ: actual size
  • 実寸(じっすん)(はか)る: to measure the actual size
  • 実寸(じっすん)(だい): full-scale, life-size

USAGE:
Very common in online shopping contexts, especially for clothing and shoes, where knowing the exact measurements is important. Also used in architecture, engineering, and design to distinguish actual dimensions from scaled representations.