Attachment is a long-standing connection or bond with others.
Step-by-step explanation:
The purview of psychology where the stages of development is considered as attachment. It is a feeling where an individual seems to have develop a very prolonged connection or have a strong affectionate bond with another individual.
This attachment is a procedural step in the psycho-social building of a personality as well as the developmental stage of life. It can be social attachment or professional attachment or biological attachment.