氣窿粵拼hei3 lung1英文:Stoma)[1],書面語嗌氣孔,係植物用嚟同外界交換氣體同水嘅地方,係一個窿,兩邊有保衛細胞圍住,令到佢可以開同閂。

番茄葉嘅氣窿
  1. "Living Environment—Regents High school examination" (PDF). January 2011 Regents. NYSED. 喺15 June 2013搵到.