No, "webcam" is not a portmanteau. A portmanteau is a linguistic blend of words where parts of multiple words are combined to create a new word with a single meaning. "Webcam" is a compound word, which is formed by combining two complete words, "web" and "camera," to create a new word with a combined meaning related to a camera connected to the internet for video communication.
A neologism for a portmanteau created by incorrectly combining a malapropism with a neologism. It is itself a portmanteau of 'malapropism' and 'portmanteau'.A malamanteau is a neologism for a portmanteau created by incorrectly combining a malapropism with a neologism. It is itself a portmanteau.A word defined to infuriate Wikipedia editors
yes
Combining two names together is known as a portmanteau.
Reptavian.
Mammavian.
A taranturilla.
A giraffephant.
A crocophant.
A cougalynx.
A gorillaphant.
A hedgephant.
A walrusphant.