Definition of coralline in English:

coralline

Syllabification: cor·al·line
Pronunciation: /ˈkôrəˌlīn
 
/

noun

(also coralline alga or coralline seaweed)
1A branching reddish seaweed with a calcareous jointed stem.
  • Family Corallinaceae, phylum Rhodophyta, in particular Corallina officinalis, which is common on the coasts of the North Atlantic
More example sentences
  • Slope sediments consist of a medium-grained, bioclastic floatstone to rudstone with abundant bryozoans, bivalves and branching coralline algae.
  • These reef-building rhodophytes are called coralline algae, because they secrete a hard shell of carbonate around themselves, in much the same way that corals do.
  • In more distal positions within the ramp, the ‘background’ sediment is a fine- to medium-grained floatstone to rudstone with abundant, small fragments of delicate-branching bryozoans and branching coralline algae.
1.1(In general use) a sedentary colonial marine animal, especially a bryozoan.

adjective

chiefly Geology Back to top  
1Derived or formed from coral: the islands were volcanic rather than coralline in origin
More example sentences
  • The similar-looking corallimorphan covers large areas of dead coralline limestone boulders on Bermuda reefs.
  • Sandy flats with occasional coralline outcrops dominate the bottom topography.
  • The beach was conspicuous, not just because of the brilliance of its coralline sand but because of the absence of the waste products of human society.
1.1Of the pinkish-red color of precious red coral.
More example sentences
  • At first they appear to have produced vases with a black glaze, but this soon gave place to a red coralline colour.
1.2Resembling coral: coralline sponges
More example sentences
  • Archaeocyathids, which are possible representatives of coralline sponges, have a secondary calcareous skeleton of high Mg-calcite and are possibly derived from demosponges.
  • Rhodoliths are a type of algae that secretes a coralline skeleton, a bit like a coral.

Origin

mid 16th century: the noun from Italian corallina, diminutive of corallo 'coral', the adjective (mid 17th century) from French corallin or late Latin corallinus, both based on Latin corallum 'coral'.

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