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:
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 what my boys was brought up to think, ‘n they’re actin’ accordin’.
Peak and Prairie Anna Fuller
“You’re actin’ a leetle nervous your own self, man,” said Tom Osby, keenly.
Heart’s Desire Emerson Hough
“Oi don’t loike th’ way he is actin’, Frankie,” whispered Barney.
Frank Merriwell’s Bravery Burt L. Standish
And there wa’n’t any special reason that I could see for her actin’ that way.
Shorty McCabe on the Job Sewell Ford
You’re actin’ square by my poor gal, sir, so I’m agoin’ to act square by you.
The Bishop’s Secret Fergus Hume
“I don’t know as I was actin’ right, either, to talk as I did,” she continued abruptly.
While Caroline Was Growing Josephine Daskam Bacon
All the time Myrtle was leanin’ against ma, just like a cat, actin’, I thought.
Mitch Miller Edgar Lee Masters
The nigher we got, the harder he stared; and the man in front was actin’ similar in regards to him.
The Depot Master Joseph C. Lincoln
This is altruism, an’ we’re but actin’ out what you been preachin’.
A Voice in the Wilderness Grace Livingston Hill
a protein that participates in many kinds of cell movement, including muscle contraction, during which it interacts with filaments of a second protein, myosin
actin ac·tin (āk’tĭn)
One of the protein components found in muscle, existing as F-actin or G-actin, into which actomyosin can be split and which acts with myosin in muscle contraction.
A protein found in all eukaryotic cells, forming filaments that make up a main component of the cell’s supporting matrix or cytoskeleton. Actin and the protein myosin together make up the contractile units (called sarcomeres) of skeletal muscle fibers.
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, […]
- Acting jack
acting jack noun phrase An acting sergeant; a soldier wearing the insignia of and having the authority of a sergeant but without the official rank