Regular verb; chiefly technical or figurative uses.
Definitions
To strengthen (a structural member such as a joist or beam) by fastening an additional piece alongside it. The contractor sistered the weakened joists to make the floor safe.
To pair or associate (something) with another as its counterpart or companion. The new charity was sistered with an established international nonprofit.
Used attributively to denote entities that are related, paired, or of the same kind (e.g., "sister cities").
Definitions
Related or connected through common origin, affiliation, or type; paired or corresponding. Tokyo and New York are sister cities in a cultural exchange program.