noun
A person who follows a strict plant-based diet, avoiding all animal products. Often used in formal or explanatory contexts; the loanword ヴィーガン is more common in casual conversation.
See also: ヴィーガン
彼女は完全菜食主義者で、卵も乳製品も食べない。
She is a vegan and doesn't eat eggs or dairy products.
Compound of 完全 (complete) + 菜食 (vegetable diet) + 主義 (principle) + 者 (person). A calque or translation of English 'vegan'.