I can give you several sentences.There was a simultaneous flash of light and thunder.The two gunshots were nearly simultaneous.Their simultaneous shout of warning went unheard.
simultaneous equations
They are two equations in two unknown variables (x and y), which are inconsistent. That is to say, there is no simultaneous solution. An alternative approach is to say that they are the equations of two lines in the Cartesian plane. The lines are parallel and so they do not meet indicating that there is no simultaneous solution.
Several methods exist. For example: solve one equation for one variable, replace that variable in the other equation. (Two simultaneous equations will often have two variables each.)
They are the common tangents to the circles.
Polytonality
I think it's polytonality.
polyrythm
polyrhythm
Simultaneous equation
The word simultaneous is an adjective. It describes two or more things happening at the same time.
They are totally unrelated concepts. Simulation is the duplication or modeling of something. Simultaneous is two or more things happening at the same time.
The word "simulcast" refers to events broadcast over two or more media, for example, radio and television.
FALSE
timbre
when two or more things are being designed at the same time
An amino acid can have a maximum of two chiral centers, but they do not all have two chiral centers. For example, threonine and isoleucine are amino acids that have two chiral centers.