| Kjeldahl apparatus | <apparatus, chemistry> An apparatus for distilling ammonia arising from acid decomposition of an organic compound; used in nitrogen analysis. (05 Mar 2000) |
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| urinary apparatus | The organs concerned in the production and excretion of urine, together with the organs of reproduction. (12 Dec 1998) |
| urogenital apparatus | The organs concerned in the production and excretion of urine, together with the organs of reproduction. (12 Dec 1998) |
| lacrimal apparatus | The tear-forming and tear-conducting system which includes the lacrimal glands, eyelid margins, conjunctival sac, and the tear drainage system. (12 Dec 1998) |
| lacrimal apparatus diseases | Diseases of the lacrimal apparatus. (12 Dec 1998) |