Correct spelling for the English word "Survening" is [səvˈɛnɪŋ], [səvˈɛnɪŋ], [s_ə_v_ˈɛ_n_ɪ_ŋ] (IPA phonetic alphabet).
I apologize, but "survening" does not appear to have an established or widely recognized definition in the English language. It is possible that the term is a neologism, a specialized term, or a typo. As such, it is difficult to provide an accurate 200-word dictionary definition for a word that does not have a clear meaning.
To offer some assistance, if "survening" is meant to refer to a different term that could be potentially related to surveying, then surveying is the measurement and mapping of the Earth's features, such as its shape, terrain, or boundaries. Surveying is a process that involves using specialized equipment, techniques, and mathematical calculations to gather accurate data and create detailed representations of a geographical area or space.
If "survening" is a term specific to a particular industry, field, or jargon, it would be helpful to provide more context or information about the specific field in which it is being used. This would allow for a more accurate definition to be provided based on the relevant context and intended meaning.