stoma; spiracle; blowhole; vent
Meanings
4 senses · 11 examplesnoun
stoma; stomate (microscopic pore in plant epidermis)
Botanical term. Found mainly on the underside of leaves; visible only under a microscope.
The stomata on plant leaves can regulate water evaporation.
You can see the stomata on the underside of leaves under a microscope.
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The opening and closing of stomata affects the plant's respiration.
noun
spiracle (breathing pore in insects)
Zoological term. Also called 气门 in entomology.
Insects breathe through spiracles.
The spider's spiracles are located on its abdomen.
noun
gas porosity; blowhole (casting defect)
technicalMetallurgical term. Also called 气眼. Considered a quality defect in castings.
Blowholes in castings will reduce the product's strength.
This workpiece has blowholes; it's a defective product.
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Blowholes must be avoided during casting.
noun
vent hole; air hole
Architecture and engineering term. Also called 气眼.
The vent holes in the wall must be kept clear.
The air hole is blocked and needs cleaning.
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The oven has vent holes for heat dissipation.