Pronunciation: [ˌɪntəvˈe͡ɪnd] (IPA) 
The correct spelling is "intervened" /ɪntərˈviːnd/. The word means to come between, to interrupt, or to mediate. The IPA phonetic transcription shows that the word is pronounced with a short "i" sound followed by the "n" and "t" sounds, then the long "e" sound, and finally the "v" and "d" sounds at the end. The commonly misspelled word "interveined" is incorrect because it adds an extra "e" between the "n" and "t" sounds.
Interveined is a verb that refers to the act of inserting or placing something between or among objects, often in a network-like pattern. It can also describe the process of weaving or intertwining together different elements or components.
In a literal sense, interveined can be used to depict the action of inserting a thin object, such as a needle or wire, in between the strands or layers of something. For example, in sewing, a thread may be interveined through the fabric to create stitches or patterns. Additionally, in horticulture, interveining can be used to describe the technique of grafting or joining together different plant species by inserting a stem or bud between the tissues of another plant.
Moreover, interveined can be employed metaphorically to describe the integration or entwining of different ideas, concepts, or elements to form a cohesive whole. For instance, in literature, multiple strands of a plot or narrative may be interveined to create a complex and interconnected storyline. Similarly, in scientific research, various disciplines may be interveined to provide a comprehensive understanding of a particular phenomenon.
Overall, the term interveined implies the act of placing or intertwining something between or among other objects, whether physically or figuratively, resulting in a network-like arrangement or amalgamation of different elements.
