if it isnt too much bigger than before, then yes, it is still a stream
the chemical still is in your body, it will show up both places.
A small, flowing body of freshwater is called a stream. Streams may also be called a: brook, creek, bayou, rivulet, wash, or run.
A stream or river called that flows into a larger stream or river is called a tributary.
Third-Stream is what Gunther Schuller called it. How many still refer to it, although the lines are beginning to blur, particularly in the wind band idiom.
The side of a stream is usually called its bank.
A small stream is called a creek.
It is occasionally called a sinking stream or a disappearing stream, but geographers and geologists normally call it a stream, just like another stream.
squishy spots in the stream. also shallow spots in the stream
Tributary is the answer you are looking for, I believe.
a tributary
this is called a meandering stream.