orthopositronium
The state of a positronium exotic atom in which the positron and electron have…The state of a positronium exotic atom in which the positron and electron have parallel spins
Meaning
1 senses(attributive, uncountable)The state of a positronium exotic atom in which the positron and electron have parallel spins
Origin
From ortho- + positronium.From ortho- + positronium.
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Word family
1 related wordsRelatedparapositronium
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable