Final answer:
Bronislaw Malinowski is the anthropologist who described everyday cultural patterns as "the imponderabilia of native life and typical behavior" through his immersive ethnographic fieldwork.
Step-by-step explanation:
The influential anthropologist who referred to everyday cultural patterns as "the imponderabilia of native life and typical behavior" was Bronislaw Malinowski. Malinowski, a pioneer of immersive long-term fieldwork, provided in-depth ethnographic perspectives through his seminal work, such as in "Argonauts of the Western Pacific" where he examined the intricate systems of trade and social structures within the Trobriand society. He emphasized the importance of understanding the nuanced aspects of daily life to comprehend the totality of a culture's complexity.