to condescendingly explain vegan or vegetarian theory or values to meat eaters, often using inappropriate or made-up language
"Someone had to die for you to eat that. Enjoy your rotting animal carcass, carnist."
"Don't plantsplain to me, hippy!"
"Don't plantsplain to me, hippy!"
by Magerk July 27, 2018
Similar to a mansplainer, one who explains plants to a horticultural professional, or one who has much more experience and knowledge in landscape and plant care than the explainer.
I got into an argument with a plantsplainer yesterday who insisted my pumpkin was a watermelon and scolded me to prune my perfectly healthy tomatoes full of fruit.
by AndiPlants July 2, 2022