Agglomerated cork stopper
A stopper made of one or more cork disks, located on both ends of granulated cork.

Cork stopper
Product made from cork and/or agglomerated cork, and designed to seal bottles or other containers, and preserve their contents.

Cork for stoppers
Cork suitable for transformation and destined for the manufacture of cork stoppers.

Cork pieces
Pieces of virgin or reproduction cork whose surface area is less than 400cm2.

Cork stopper manufacturing
Industry that transforms cork into cork stoppers for wines, spirits and still and fizzy drinks.

Cork with green wood
Cork showing cells of a translucent appearance near the inner surface ('belly'), and containing water after drying.

Leftovers resulting from the preparation of cork and/or its transformation into cork stoppers.

Cylindrical piece of natural cork of variable thickness and diameter.

'Em raça' cork
'Non-classified' prepared cork.

Fragment of cork between 0.25 and 8mm in size, classified by granule size and volumetric mass.

Lenticellate channels
Structures that intersect the suberose tissue between the atmosphere and the living cells.

Soft plant tissue consisting of simple, thin walled cells.

Lenticellate channel in cross-section.

Prepared cork
Reproduction cork, already boiled, flattened, sorted and possibly subjected to a 'choice' operation (usually called 'em raça' (pedigree cork) cork or 'traços' (prime cork)).

Raw cork
Raw or reproduction cork that has not undergone any treatment after being harvested.

Low quality reproduction cork, not capable of being transformed for the manufacture of cork stoppers.

Reproduction cork
Cork formed after the removal of the virgin cork.

Prepared cork of a quality and grade suitable for a final processing by cutting.

Relating to, or consisting of cork.

'Prepared' cork, graded and free of 'boots', refuse and/or bits of cork.

Virgin cork
Cork derived from the first harvest of the trunk and branches.

'Wedges' or 'Chocks'
In Portuguese 'calços'. Parts of cork formed at the base of the trunk, in direct contact with the ground (in Spain they are called 'zapatas').

Yellow stain
Yellow stain that develops on the back of a strip of cork, and may show discolouring on the suberose tissue, producing a characteristic odour.