Relating to or involving excitons; describing the properties or behavior of excitons in materials.
From 'exciton' + '-ic' (suffix forming adjectives). Created alongside 'exciton' in mid-20th century physics terminology.
Materials scientists talk about 'excitonic effects' when light creates these electron-hole pairs—it's a key property determining whether a material can glow, absorb light, or conduct electricity efficiently.
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