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[ro̅o̅lō′] sing. rouleau
Etymology: Fr, cylinder
red cells in a microscopic roll or "stack-of-coins" formation that may be caused by abnormal proteins, as in multiple myeloma or macroglobulinemia. Compare hemagglutination. See also erythrocyte sedimentation rate.
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Hematology Stacks of RBCs in groups of 4–10 cells, likened to stacked coins; artifactual rouleaux occur in the thick area of any blood smear; true rouleaux formation occurs with ↑ protein, fibrinogen and globulins, ↑ ESR due to dextran and monoclonal gammopathies–myeloma, Waldenström's disease, cryoglobulinemia, sarcoidosis, cirrhosis. See LISS.


(roo-lō′) plural.rouleaux [Fr., roll]
A group of red blood cells that are stuck together, resembling a roll of coins.


The stacking up of red blood cells, caused by extra or abnormal proteins in the blood that decrease the normal distance red cells maintain between each other.
References in periodicals archive ?
A great alternative to traditional baubles, VV Rouleaux has a lovely selection of glitter feather butterflies, from pounds 5.
The idea for VV Rouleaux all began when Annabel was working as a florist in London.
Chenille looped fringing (3cm deep), pounds 3 per metre, V V Rouleaux
VV Rouleaux specialises in ribbons, braids, trims and flowers to decorate and embellish winter knits and ball gowns, your hair, your hats, or whatever takes your fancy.
Annabel said: 'I wanted to bring VV Rouleaux to Scotland to show people the wonderful possibilities of passementerie.
99 at Gap Shell belt from VV Rouleaux selection, from pounds 30
Ad Hoc 020-7376 8829 The Amber Centre 020-7224 2953 Carole Davies 020-7935 5685 Debenhams 020-7408 4444 Marks & Spencer 020-7268 1234 Miss Sixty 0870-751 6040 Seafolly 0800-018 0501 Tateossian 020-7351 5685 The Amber Centre 020-7224 2953 VV Rouleaux 020-7224 5179 Warehouse 0800-915 9902 INTERIORS Aero 020-7351 0511 Alessi 020-7518 9091 Dulux 01753-550555 Graham & Green 020-7727 4594 Habitat 0845-601 0740 Heuga Carpet Tiles 01274-690690 House of Fraser 020-7693 2000 Ikea 020-8208 5600 John Lewis 020-7629 7711 Look 2000 01920-469241 Nest 01392-204305 Planet Bazaar 020-7387 8326 (www.
70, Seafolly; white necklace, from a selection, Tateossian; black necklace, pounds 125, matching bracelet, pounds 85, and bangles, pounds 25 each, all Carole Davies; necklace (worn as belt), pounds 72, VV Rouleaux.