coincident, coincidental, coinciding, concurrent, co-occurrent, cooccurring, simultaneous
Meaning: occurring or operating at the same time; "a series of coincident events"
The concrete of our buildings is obtained by the simultaneous manipulation of gravel and mortar.
There was a simultaneous change in his bearing--in the expression of his features--and his attitude in the saddle.
"I think you can," was the simultaneous reply; Mr. Travilla adding, "and we can help with the lint, and by running the sewing-machines.
And then a simultaneous idea flashed on himself and Mrs. Hoopington. Their faces flushed to distinct but harmonious tones of purple, and with one accusing voice they screamed, "You've shot the fox!"
It appeared that the attack of lice was simultaneous in Oregon, Washington, and British Columbia, extending over a distance coastwise of more than five hundred miles, and even inland up the Skagit River, where there was an isolated yard.
Then she swayed, lost her balance, stumbled, staggered, and fell, sliding down over the sun-baked roof and crashing off it through the tangle of Virginia creeper beneath--all before the dismayed circle below could give a simultaneous, terrified shriek.
During her stay in the store, the foreign customer, making her first visit to the place, is frequently startled by loud shouts from the whole staff of clerks and small boys,--outcries so sudden, so simultaneous, and so stentorian, that she cannot rid herself of the idea that something terrible is happening every time that they occur.
The rocks of the Spy-glass re-echoed it a score of times; the whole troop of marsh-birds rose again, darkening heaven, with a simultaneous whirr; and long after that death yell was still ringing in my brain, silence had re-established its empire, and only the rustle of the redescending birds and the boom of the distant surges disturbed the languor of the afternoon.
Thus there was introduced a new feature into the art of multiplex telegraphy, for, whereas duplexing (accomplished by varying the strength of the current) permitted messages to be sent simultaneously from opposite stations, diplexing (achieved by also varying the direction of the current) permitted the simultaneous transmission of two messages from the same station and their separate reception at the distant station.