Relating to or belonging to the cepa genus; having characteristics of onions or the onion family (Alliaceae).
From cepa with the suffix -aceous meaning 'of the nature of' or 'belonging to the family of.' This scientific adjective precisely categorizes plants within the onion family.
All the vegetables your eyes water over—onions, garlic, shallots, leeks—are technically cepaceous plants, and they all share the same chemical compound that makes you cry. It's not the vegetable attacking your eyes; it's your body reacting to a defense mechanism the plant evolved!
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