The term 'oven' originates from Sanscrit - as far as we know, but could well7 be from much earlier origins - and comes into English via Greek and Latin. It couldn't be called an Arabic term. The term 'microwave' or 'micro' simply refers to the the use of microwaves, generated by a magnetron, in cooking. The term 'micro oven' itself is part of the English language. As many English terms have gone into other languages, this has very likely happened in the case of microwave ovens, which means while the term is currently English it could also be regarded as belonging to other language systems. Its history (etymology) has no real bearing on its current usage.
The prefix "micro-" in "microwave oven" refers to the small wavelength of electromagnetic radiation used to cook food in the oven, which is much shorter than that of radio waves or infrared radiation. It does not refer to the size of the oven itself.
The Arabic word for 'cars' is saiarat and the Arabic spelling is سيارات.
the arabic word for mall is veishnou
the Arabic word for bread is khubz.
The word for digging in arabic is حفر
The Arabic word for maize is 'الذرة'
The Arabic word for central is مركزي
The Arabic word for metal is معدن
The Arabic word for cistern is صهريج.
Arabic word for Jewellery
عدالة is the arabic word of Justice.
Arabic word for echo