[sen-si-tom-i-ter] 
| an instrument for testing the sensitivity of various types of film, consisting of an apparatus for exposing successive parts of the film to a light of standard intensity at successively increasing lengths of exposure. |
[sen-suh-toh-me-trik] , adjective | sen·si·tom·e·ter (sěn'sĭ-tŏm'ĭ-tər) n.
[sensit(ivity) + -meter.] sen'si·to·met'ric (-tə-mět'rĭk) adj., sen'si·tom'e·try n. |
sɪˈtɒm