Of tin with a valency of two; of tin(II).Compare with stannic
- ‘Tranexamic acid, D-gluconic acid (hemicalcium salt), dithiothreitol, and stannous chloride were purchased from Sigma (St. Louis, MO).’
- ‘Reduction with stannous chloride alone allowed for selective reduction of inorganic mercury.’
- ‘For example, sodium fluoride, calcium fluoride, and stannous fluoride are all used to help reduce tooth decay.’
Mid 19th century: from late Latin stannum ‘tin’ + -ous.
We take a look at several popular, though confusing, punctuation marks.