Spinnbarkeit

Spinnbarkeit (English:spinnability), also known as fibrosity, is a biomedical rheology term which refers to the stringy or stretchy property found to varying degrees in mucus, saliva, albumen and similar viscoelastic fluids. The term is used especially with reference to cervical mucus at the time just prior to or during ovulation, and to sputum, particularly in cases of cystic fibrosis.