This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. Plural form of meiosis.

"We also began by considering the results of a single meiosis, which I could demonstrate by labeling and moving around transparent coloured strips on the overhead projector, and then moved to considering the pooled results of the many meioses that produce, for example, sperm."