Adjacent , from the Latin adiăcens , is an adjective used to name what is located in the vicinity of something. It can be said, therefore, that what is adjacent is what is next to it . For example: "You were wrong, madam, Dr. López lives in the adjacent house" , "The adjacent field belongs to an Italian millionaire" , "The adjacent premises are empty" .
Sometimes, the adjacent acts as something complementary to the main or most important thing. In a mansion or palace, there may be adjacent houses for guests . The adjacent can also serve to mark a delimitation: "The area adjacent to the nuclear plant was evacuated by the authorities due to the risk of a toxic leak."
Adjacent angles
Angles that have a common side and vertex, and whose other sides are opposite semilines, are known as adjacent angles . Given their characteristics, adjacent angles are simultaneously supplementary and consecutive since they are equivalent, together, to a so-called plane angle (measuring one hundred and eighty degrees).
Some theorists include among adjacent angles those that share the vertex and a side, even though they are not supplementary. For others, however, these are consecutive angles .
Within the denomination of internal adjacent angles , we can mention supplementary angles (add to 180º), complementary angles (add to 90º) and conjugate angles (add to 360º).
The term in grammar
In the field of grammar , adjacent is the syntactic constituent belonging to the noun phrase that complements a noun. It is common for it to be a qualifying adjective that can be placed before or after the noun.
However, although we have explained that fundamentally adjacent ones tend to be qualifying adjectives, we also find others that are adverbs, prepositional constructions, names or adjective propositions.
Adjacent selector
In the same way, we cannot ignore the existence of another use of the adjacent term. Specifically, we are referring to what is known as an adjacent selector .
This is a concept that is used in the field of computing and especially the Internet to refer to a mechanism that is used to carry out the selection of two elements that are followed by the HTML code and that are also considered "siblings."
The notion in medicine and geography
The field of medicine also makes use of the concept we are analyzing. Specifically, within this health sector there is talk of what is known as adjacent segment disease , which seriously affects the spine.
On the other hand, at a political and geographical level, the word adjacent is used to refer to a type of territory. Specifically, there is talk of what are known as adjacent islands .
These are islands that are separated from a continent but, despite that physical distance, are part of a particular country and are included within its territory. A clear example of this type of places are the two archipelagos that exist in Spain : the Canary Islands and the Balearic Islands . Thus, both, although they are separated from the nation, are part, in every sense, of the Spanish State .