Overall, the argument $x$ of $\ln(x)$ must be unitless, and a log transformed quantity must be unitless. If $x = 0.5$ is measured in some units, say, seconds, then taking the log actually means $\ln(0.5s/1s) = \ln(0.5)$.
Definition of CHRISTOLOGY. : theological interpretation of the person and work of Christ. â ChrisÂ·toÂ·logÂ·iÂ·cal \Ëkris-tÉ-Ëlae-ËlÃ¤-ji, kÉl-\ ËkrÄ«s. ADJECTIVE. advertisement
Teratology is the study of abnormalities of physiological development. It is often thought of as the study of human congenital abnormalities, but it is broader than that, taking in to account other non-birth developmental stages, including puberty; and other non-human life forms, including plants.