(healthcare) Being or relating to a form of universal health care in which the costs of essential healthcare for all residents are covered by a single public system (whether state-run or contracted...

Of or relating to Touraine, one of the traditional provinces of France.

(geometry) A surface (in more than two dimensions, a plane is trivially developable) that can be flattened into a plane without distortion.

(chemistry) A notation for denoting the prevalence of an isotope, equal to the normalized ratio of one isotope to another in a sample relative to that same ratio in a standard.