actin filament n.
One of the contractile elements in skeletal, cardiac, and smooth muscle fibers.
a globulin that is present in muscle plasma and that in connection with myosin plays an important role in muscle contraction. variant of before a vowel: actinism. Historical Examples And if Mr. Robert hadn’t been actin’ so much like a poor prune he’d have quit that line right there. Torchy, Private Sec. Sewell Ford That’s […]
having tentacles or rays. pertaining to the oral area from which the arms or tentacles radiate. Historical Examples The plane of the actinal surface at first meets that of the abactinal at an acute or nearly right angle. The Works of Francis Maitland Balfour, Volume II (of 4) Francis Maitland Balfour The larval mouth is […]
- Acting area
the part of a stage used by the actors: Confine the acting area for this scene to downstage.
serving temporarily, especially as a substitute during another’s absence; not permanent; temporary: the acting mayor. designed, adapted, or suitable for stage performance. provided with detailed stage directions for the performer: an acting version of a play. the art, profession, or activity of those who perform in stage plays, motion pictures, etc. anything done, being done, […]