huygens' principle of superposition has 1 distinct synonym spread across 1 of its 1 sense. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
the displacement of any point due to the superposition of wave systems is equal to the sum of the displacements of the individual waves at that point
“the principle of superposition is the basis of the wave theory of light”
Synonyms, antonyms and the broader and narrower relations for huygens' principle of superposition come from Princeton University’s WordNet. Full sources and licences.