Pronunciation: [sˈɛntɹad] (IPA) 
The spelling of the word "centrad" is as follows: /ˈsɛn.træd/. The word "centrad" is an adjective that describes something that is centralized or focused around a particular point or axis. The IPA phonetic transcription of the word helps to explain its spelling, with the "c" pronounced as /s/, the "e" as /ɛ/, the "n" as /n/, the "t" as /t/, the "r" as /r/, the "a" as /æ/, and the "d" as /d/.
Toward the center.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "centrad" does not have a clear etymology as it seems to be a relatively uncommon term that might have been coined within a specific context or field. However, based on its structure, we can analyze its possible origins.
The term "centrad" appears to be derived from the Latin prefix "cent-" meaning "hundred" or "hundredth part". This prefix is commonly seen in words like "century" (one hundred years) or "centimeter" (one hundredth of a meter).
Additionally, the suffix "-ad" in "centrad" is used in words to denote a direction or location toward something. For example, "forward" indicates a direction toward the front.
When combining the prefix "cent-" with the suffix "-ad", we can infer that "centrad" might be a term suggesting movement or position towards a hundred or hundredth part.
