| AETIOLOGISTS | • aetiologists n. Plural of aetiologist. • ætiologists n. Plural of ætiologist. • AETIOLOGIST n. a student of aetiology, also ETIOLOGIST. |
| AUTOTOMISING | • autotomising v. Present participle of autotomise. • AUTOTOMISE v. to effect an autotomy, the reflex loss of part of the body to save the whole (in lizards, etc.), also AUTOTOMIZE. |
| CONTAGIONIST | • contagionist n. One who believes in the contagious character of certain diseases, such as yellow fever. • CONTAGIONIST n. (obsolete) a person who believes in the contagiousness of diseases. |
| DELTIOLOGIST | • deltiologist n. A collector of picture postcards. • DELTIOLOGIST n. a collector of picture postcards. |
| GNOTOBIOTICS | • gnotobiotics n. The science involved with maintaining a microbiologically controlled environment. • GNOTOBIOTICS n. the study of organisms living in germfree conditions or when inoculated with known microorganisms. |
| GONIATITOIDS | • GONIATITOID n. a fossil like a goniatite. |
| HISTOLOGISTS | • histologists n. Plural of histologist. • HISTOLOGIST n. one who studies organic tissue. |
| LITHOLOGISTS | • lithologists n. Plural of lithologist. • LITHOLOGIST n. a student of lithology. |
| NEGOTIATIONS | • negotiations n. Plural of negotiation. • NEGOTIATION n. the act of negotiating. |
| STORIOLOGIST | • storiologist n. One who studies folk tales. • STORIOLOGIST n. a folklorist. |
| TIMBROLOGIST | • TIMBROLOGIST n. a collector of stamps. |
| TOXICOLOGIST | • toxicologist n. A scientist or physician who specializes in toxicology. • TOXICOLOGIST n. an expert in toxicology. |
| TRIBOLOGISTS | • tribologists n. Plural of tribologist. • TRIBOLOGIST n. a student of tribology. |
| TRICHOLOGIST | • trichologist n. A professional who helps people with hair or scalp problems; a practitioner of trichology. • TRICHOLOGIST n. a person who specializes in hair and scalp care. |