| Hymnologist | n. A composer or compiler of hymns; one versed in hymnology. Busby. [ 1913 Webster ] |
| Hydrologist | n. One skilled in hydrology. [ 1913 Webster ] |
| Hydrologist | นักอุทกวิทยา [วิทยาศาสตร์และเทคโนโลยี] |
| Hydrologists | นักอุทกวิทยา [TU Subject Heading] |
| hydrologist | (n) a geologist skilled in hydrology |