A group of similar things or people positioned or occurring closely together
clusters of berries
A fly which enters buildings in large numbers while looking for a place to overwinter
A compound consisting of or containing a group of metal atoms (sometimes associated with non-metal atoms) linked together by covalent or coordinate bonds.
Another term for guar.
A bomb which releases a number of projectiles on impact
Another term for maritime pine.
A chord containing a number of closely adjacent notes
A loose grouping of stars
Another term for note cluster.
A geographic area with a statistically higher than average occurrence of cancer among its residents
A cluster of galaxies.
An open cluster of stars which appear to share a common motion through space, and the distance of which can be determined from measurements of the motions of the individual stars.
The cluster of stars including the sun and the Milky Way (now disused).
A type of severe headache in which the pain is usually limited to one side of the head, tending to recur over a period of several weeks
A large compact spherical star cluster, typically of old stars in the outer regions of a galaxy
(In the US) an attachment to a military decoration representing a twig with oak leaves and acorns, indicating distinguished action or a subsequent award of the same decoration
A disastrously mishandled situation or undertaking
A cluster of galaxies which themselves occur as clusters
A group of consonants pronounced in immediate succession, as str in strong
Attributive and in the possessive. Designating rich galaxy clusters listed in Abell's catalogue; relating to such clusters. Frequently in Abell cluster.