small tubular cavities in wall plates of barnacles, the ends of which may be viewed from below.
Openings in a medium. Also referred to as interstices. Size and shape of openings in cellulose are closely controlled in manufacture.
Name given in the boletes or polypores to the opening end of the spore-bearing tubes.
(1) Small voids in the body of a metal; (2) In powder metallurgy - minute cavities in a compact, sometimes intentional; (3) minute perforations in an electroplated coating.
Small openings of tubes where the spores are developed, under the caps of certain mushrooms such as polypores and boletes.
very small openings, such as in the skin
Small straw-like ends of hardwood elements appearing on the ends of a slat or flooring unit as small holes. They are very predominant in the springwood of red oak.
an opening on the fertile surface of bolete and polypore fungi, through which basidiospores are disseminated.
gaps in calcification of zooid walls. In dead, cleaned skeletal zooids (used in taxonomy), these are open holes, but in live zooids, they are covered by cuticle and may be plugged by tissue as well.
The openings in a medium. Also referred to as intertices.
Cavities in an active battery mass.
Wood cells of comparatively large diameter that have open ends and are set one above the other to form continuous tubes. The openings of the vessels on the surface of a piece of wood are referred to as pores.
Very small open spaces in a rock or granular material, including the complex network of channels in the interior of a particle, such as those within an ion exchange resin bead or an activated carbon granule.