Sanitarium is the usual American spelling of sanatorium: a place, often in the countryside or the mountains, where people used to stay for weeks or months to get better from a long illness, especially tuberculosis.

Sanitariumsanitarium is the usual American spelling of sanatorium是sanatorium比較常見的美式拼法: a place, often in the countryside or the mountains指的是一個常常位在鄉下或山裡的地方, where people used to stay for weeks or months to get better from a long illness以前的人會在那裡住上好幾週或好幾個月，來治療長期的疾病, especially tuberculosis尤其是肺結核。

The word feels dated now; we more often say hospital, clinic, or rehab. In American history it was also used for health resorts — the Kellogg family ran a famous one — and, more darkly, for some mental institutions.

The word feels dated now這個字現在聽起來有點過時; we more often say hospital, clinic, or rehab我們比較常說hospital（醫院）、clinic（診所），或rehab（復健中心）。 In American history在美國歷史上, it was also used for health resorts它也用來指一些健康度假村 — the Kellogg family ran a famous one家樂氏家族就經營過一個有名的 — and而更陰暗一點 more darkly, for some mental institutions它也曾用來指一些精神病院。

Though actually, the two spellings are not a perfect twin in every old text: some American writers treated sanitarium as the wellness-spa word and sanatorium as the TB-hospital word, but for learners they are the same headword with an American -i-.

Though actually不過其實, the two spellings are not a perfect twin in every old text這兩種拼法在一些老文獻裡不完全是雙胞胎: some American writers treated sanitarium as the wellness-spa word有些美國作者把sanitarium當成講養生度假村的字 and而 sanatorium as the TB-hospital word把sanatorium當成講肺結核醫院的字, but不過 for learners對學習者來說, they are the same headword with an American -i-這兩個其實是同一個字，只是美式拼法多了一個i。

It is not sanitizer, and it is not a place that makes you sane, even though the letters sit close.

It is not sanitizer它不是sanitizer（消毒劑）, and而 it is not a place that makes you sane也不是一個讓你變得sane（神智清醒）的地方, even though the letters sit close雖然這幾個字拼起來長得很像。