15-Letter Words Containing: _,A,E,E,F,R,R,S

• A device that uses diffraction (especially X-ray diffraction) to investigate the structure of matter.

• failure to act with the prudence that a reasonable person would exercise under the same circumstances

• phenomenon exhibited by materials like iron (nickel or cobalt) that become magnetized in a magnetic field and retain their magnetism when the field is removed

• a phenomenon in ferrites where there can be incomplete cancellation of antiferromagnetic arranged spins giving a net magnetic moment