[‹ Gk grammat-, s. of grámma letter + -o- + -logy]-o- is the typical ending of the first element of compounds of Greek origin (as -i- is, in compounds of Latin origin), used regularly in forming new compounds with elementsof Greek origin and often used in English as a connective irrespective of etymology(Franco-Italian; geography; seriocomic; speedometer); -logy is a combining form used in the names of sciences or bodies of knowledge. Other wordsthat use the affix -logy include: anthropology, genealogy, reflexology, thanatology, tropology