We don't have synonyms for glycaemia yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are glyceria, glycemia and glycaemic.
(n) :
(British spelling) Alternative form of glycemia. [(medicine, American spelling) Presence of glucose in the blood (which is always true), and (usually, more specifically) average concentration thereof over time, and its regulation; in this sense, glycemia is hypernymic to euglycemia, hyperglycemia, and hypoglycemia, and a mention of glycemia is a reference to blood sugar regulation and degree or quality thereof.]
(n) :
(British spelling) Alternative form of glycemia. [(medicine, American spelling) Presence of glucose in the blood (which is always true), and (usually, more specifically) average concentration thereof over time, and its regulation; in this sense, glycemia is hypernymic to euglycemia, hyperglycemia, and hypoglycemia, and a mention of glycemia is a reference to blood sugar regulation and degree or quality thereof.]