You can't let this go, can you? Ok then, so here we go.
From thesaurus.com:
technical [tek-ni-kuhl]
Synonyms: abstruse, high-tech, industrial, mechanical, methodological, occupational, professional, restricted, scholarly,
scientific, special, specialized, technological, vocational
Now that we left that behind, for the history of the definition:
"Before the discoveries of the early 21st century, astronomers had no real need for a formal definition for planets."
"Because a new planet is discovered infrequently, the IAU did not have any machinery for their definition and naming. After the discovery of Sedna, it set up a 19-member committee in 2005, with the British astronomer Iwan Williams in the chair, to consider the definition of a planet."
Source:
IAU definition of planet - Wikipedia, the free encyclopedia
"Technically,
there was never a scientific definition of the term Planet before 2006. When the Greeks observed the sky thousands of years ago, they discovered objects that acted differently than stars. These points of light seemed to wander around the sky throughout the year. We get the term "planet" from the Greek word "Planetes" - meaning wanderer."
"It was the recent discovery of an object larger than Pluto within the Kuiper Belt that changed everything. Is this object, now named Eris, our 10th planet since it is larger than Pluto? This discovery and the naming of this new object prompted the IAU to discuss a scientific definition for the term planet."
Source:
Mission:Science