The phrase "assembling body" is correct and usable in written English.
It can be used in contexts where a group or organization is coming together to form a collective entity or to work on a specific task.
Example: "The assembling body of experts will convene next week to discuss the new policy changes."
Alternatives: "gathering group" or "forming assembly".
Speaks of Humphrey's woes-meeting payrolls, & hotel bills, stemming the tide of disaffection & defeatism, assembling bodies for for rallies.
Here in East London, hundreds of people, and dozens of robots, work on the floor of the sprawling DaimlerChrysler plant, assembling bodies, fitting engines and torquing suspensions, before shipping the finished product, usually to distant destinations like Tokyo or Melbourne, Australia.
Speaking in French (as everyone there did), Cannizzaro's eloquence and logic made an indelible impression on the assembled body.
They timed precisely how long it took Porsche to assemble body parts and engines and install carpeting and dashboards, then studied the comparable times in Japan.
You know that the factual findings of a trial judge or jury are based on a carefully assembled body of evidence.
Without one, it is difficult to assemble body paragraphs of argumentative evidence to prove that thesis, or to reflect on the implications of that thesis in a paper's conclusion.
The growth of entitlements, he and his staff tell an assembled body of lawmakers and advisers, will bankrupt the country and must be curtailed.
Opus Dei's highest assembled bodies are the General Congresses, which are usually convened once every eight years.
During this time, HMBB was the first company to assemble bodies for Ford Australia until their Geelong, plant was completed.
The video, West told Vanity Fair, was intended to be "a comment on fame," as the title suggests: A night vision camera, positioned as an omniscient bystander, panned and leered over the vulnerable, assembled bodies of the most famous people in popular culture.
