Correct spelling for the English word "ANTDET" is [ˈantdɪt], [ˈantdɪt], [ˈa_n_t_d_ɪ_t] (IPA phonetic alphabet).
ANTDET is not a recognized word in the English language, and therefore, does not have an established dictionary definition. It is possible that you misspelled the term or it may be an abbreviation or acronym specific to a certain field or industry that is not widely recognized.
In general, when encountering an unknown term, it is helpful to break it down into smaller components for analysis. In this case, "ANT" could refer to the insect species known as an ant, a common social insect often found in colonies. "DET" is a common abbreviation that stands for "determiner," a grammatical term used to describe a word or phrase that is used in front of a noun to provide more information about it (e.g., "the," "a," "an"). However, without more context or the correct spelling, it is difficult to provide a precise definition for "ANTDET."
If you can provide more information or clarify the term that you are seeking, I would be happy to assist you further in defining it.