Adjacent, from Latin adiăcens, is an adjective that is used to name what is located in the surroundings of something. It can be said, therefore, that the adjacent is what is next to. For instance: “You are wrong, ma’am, Dr. López lives in the adjacent house”, “The adjacent field belongs to an Italian millionaire”, “The adjacent premises are empty”.

AdjacentSometimes the adjacent acts as something complementary of the main thing or the most important thing. In a mansion or palace, there may be adjacent houses for the 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”.

In the same way, at the political and geographical level, the term that concerns us is used to refer to a specific type of territory. Specifically, it talks about what are known as adjacent islands.

These are islands that are separated from a continent in question but, despite that physical distance, they are part of a specific country and are included within its territory. A clear example of this type of place are the two archipelagos that exist in Spain: the Canary Islands and the Balearic Islands. Thus, both some and others, although they are separated from the nation, are part, in all senses, of the Spanish State.

The angles that have a side and the vertex in common, and whose other sides are opposite rays, are known as adjacent angles. Given their characteristics, the adjacent angles are supplementary and in a row simultaneously since they are equivalent, as a whole, to an angle of the so-called plains (which measure one hundred and eighty degrees).

Some theorists include between the adjacent angles those that share the vertex and a side, even though they are not supplementary. For others, instead, these are consecutive angles.

Within the denomination of internal adjacent anglesWe can mention supplementary angles (add 180º), complementary angles (add 90º) and conjugate angles (add 360º).

In the field of grammar, adjacent is the syntactic constituent belonging to the noun phrase that complements a noun. It is usual that it is a qualifying adjective that can be placed before or after the noun.

However, although we have stated that the adjacent ones are mainly qualifying adjectives, we also find others that are adverbs, prepositional constructions, nouns or adjective propositions.

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 be able to carry out the selection of two elements that are followed by the HTML code and that are also considered “brothers”.

And all this without forgetting that the field of Medicine also makes use of the concept that we are analyzing. Specifically, within this health sector there is talk of what is known as “adjacent segment disease”, which seriously affects the spine.