A vocal performance with no instrumental accompaniment.
In a manner of a choir with no instrumental accompaniment; literally, "in the style of the (Sistine) Chapel (in Rome)", such as a musical Mass done a cappella.
Singing solely or mainly without instrumental accompaniment.
Related to a form of purely vocal music mostly associated with American college performance groups.
A harmonic set of three or more notes that is heard as if sounding simultaneously.
A straight line between two points of a curve.
A section of subsidiary railway track that interconnects two primary tracks that cross at different levels, to permit traffic to flow between them.
The distance between the leading and trailing edge of a wing, measured in the direction of the normal airflow.
A keyboard shortcut that involves two or more distinct keypresses, such as Ctrl+M followed by P.
An imaginary line from the luff of a sail to its leech.
A horizontal member of a truss.
A cord.
An edge that is not part of a cycle but connects two vertices of the cycle.
The string of a musical instrument.
To write chords for.
To provide with musical chords or strings; to string; to tune.
To accord; to harmonize together.