Kjeldahl

adjective

Kjel·​dahl ˈkel-ˌdäl 

: of, relating to, or being a method for determining the amount of nitrogen (as in an organic substance) by digesting a sample with boiling concentrated sulfuric acid and other reagents, adding an excess of alkali, distilling, collecting the ammonia expelled, and determining the ammonia by titration

Kjeldahl analysis

Kjeldahl apparatus

kjeldahlization

ˌkel-ˌdäl-ə-ˈzā-shən 

noun

kjeldahlize

ˈkel-ˌdäl-ˌīz 

transitive verb

kjeldahlized; kjeldahlizing