Refractory

1.

(hard to manage stubborn, resisting control or discipline not yielding to treatment, resistant to heat, hard to fuse or work) refractory child ដែលរឹង រូស, ដែលរឹងមុខ

2.

(បច្ចេកទេស) ដែលពិបាកត្រួតត្រា

3.

(វេជ្ជសាស្ត្រ) (ជំងឺ) ដែលពិបាក ឬពុំអាចព្យាបាលបាន

• refractory period
  - រយៈរឹងក្បាល (សរីរាង្គ ឬបាក់តេរី)

1.

A refractory person.

2.

OPottery) A piece of ware covered with a vaporable flux and placed in a kiln, to communicate a glaze to the other articles.

1.

Obstinate in disobedience; contumacious; stubborn; unmanageable; as, a refractory child; a refractory beast.

2.

Resisting ordinary treatment; difficult of fusion, reduction, or the like; -- said especially of metals and the like, which do not readily yield to heat, or to the hammer; as, a refractory ore.

1.

Refractoriness