気き孔こう体たいMeanings1nounpore; stomaBotanical term for a pore or stoma on a plant surface, especially in the context of gas exchange. Related to 気孔 (きこう).See also: 気孔 (きこう)植しょく物ぶつの葉はの裏うら側がわには多おおくの気き孔こう体たいがある。There are many stomata on the underside of plant leaves.