This principle states that, if we could somehow replace every particle on earth with its antiparticle—thus creating a sort of antiearth—no one would be able to tell the difference.
Source: wiktionary
Antiearth
Synonyms for "antiearth"
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14 total sentences available.
Each extends what would be called, on antiearth, a right hand.
Source: wiktionary
But actually, CPT only tells you that if you drop an apple to the earth it will fall exactly as if you drop an antiapple to an antiearth.
Source: wiktionary
Antiapples would still fall to antiearth, radioactive antielements would still decay, and antisugar would taste sweet
Source: wiktionary
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.