内ない周しゅう

noun

inner circumference; internal perimeter

Refers to the measurement around the inside of a circular or closed shape. Often contrasted with 外周 (outer circumference).

See also: 外周

• このパイプの内ない周しゅうを測はかってください。

  Please measure the inner circumference of this pipe.

• 内ない周しゅうと外がい周しゅうの差さはわずかだった。

  The difference between the inner and outer circumferences was slight.