伸度 is read as しんど (shindo) and means elasticity.
しんど
shindo
のばす
to grow long (e.g. hair, nails)
のび
(ability to) spread (of paint, cream, etc.)
のびのび
(growing) quickly
のびやか
comfortable
のし
sidestroke (swimming)
のびなやむ
to be sluggish
しんちょう
expansion
しんし
temple (on a loom)
のびほうだい
unchecked growth (esp. hair, foliage, etc.)
のしあげる
to promote
のびあがる
to stretch
しんかいせん
involute