| Main Entry: | |
| Part of Speech: | conjunction |
| Definition: | a suggestion of choice |
| Synonyms: | as a choice, as a substitute, as an alternative, conversely, either, in other words, in preference to, in turn, on the other hand, or but, or else, or only, preferentially |
| Antonyms: | neither, nor, without choice |
| Main Entry: | or |
| Part of Speech: | conjunction |
| Definition: | a suggestion of approximation |
| Synonyms: | about, approximately, practically, roughly |
| Main Entry: | or |
| Part of Speech: | conjunction |
| Definition: | either |
| Synonyms: | alternative, else, ere, instead, oppositely, otherwise, rather, substitute, uncertainty |
| Main Entry: | operating room |
| Part of Speech: | noun |
| Definition: | room for surgery |
| Synonyms: | OR, operating table, operating theater, surgery |