| ACAROLOGIST | • acarologist n. A specialist in acarology - the study of ticks and mites. • ACAROLOGIST n. a practitioner of acarology, the study of mites. |
| ANDROLOGIST | • andrologist n. (Medicine) A person who studies andrology. • ANDROLOGIST n. a student of andrology. |
| ASTROLOGIST | • astrologist n. One who practices astrology; an astrologer. • ASTROLOGIST n. one who affects to tell fortunes from the stars, also ASTROLOGER. |
| CHIROLOGIST | • chirologist n. One who engages in palm reading. • chirologist n. A user of sign language. • CHIROLOGIST n. one who claims to be able to detect character from handwriting. |
| CHOROLOGIST | • chorologist n. One who studies chorology. • CHOROLOGIST n. a student of chorology. |
| HIEROLOGIST | • hierologist n. One engaged in hierology, the comparative and historical study of religions. • HIEROLOGIST n. a student of hierology, the science of sacred matters. |
| HYDROLOGIST | • hydrologist n. Someone who is skilled in or practises hydrology. • HYDROLOGIST n. an expert in hydrology. |
| METROLOGIST | • metrologist n. One who studies or practices metrology. • METROLOGIST n. a student of metrology. |
| MICROLOGIST | • micrologist n. A scientist working in the field of micrology. • MICROLOGIST n. a practitioner of micrology, the branch of science which depends on the use of a microscope. |
| NECROLOGIST | • necrologist n. A person who compiles a necrology. • NECROLOGIST n. a person who writes obituaries or eulogies. |
| NEUROLOGIST | • neurologist n. A doctor or scientist who practices or specializes in neurology. • NEUROLOGIST n. one specializing in neurology. |
| PATROLOGIST | • patrologist n. A student of patrology. • PATROLOGIST n. one who practises patrology, the study of early Christianity. |
| PETROLOGIST | • petrologist n. A geologist who specializes in petrology. • PETROLOGIST n. a student of petrology, the geological study of rocks. |