From Longman Dictionary of Contemporary Englishdiffractdif‧fract /dɪˈfrækt/ verb [transitive] technical HPOHPOto bend light or sound waves as they pass around something or through a hole → refract —diffraction /dɪˈfrækʃən/ noun [uncountable]→ See Verb table
Examples from the Corpus
diffract• As a result they diffract X-rays diffusely. 