The longest words

Got my record on the longest words. Here it goes:
3rd longest: pneumonoultramicroscopicsilicovolcanoconiosis (45 letters)
2nd longest: osseocarnisanguineoviscericartilaginonervomedullary (51 letters)
Longest: aequeosalinocalcalinoceraceoaluminosocupreovitriolic (52 words)
Impressive huh? Do you notice that these words are scientific??? If you want to know the meanings, I've got not the faintest idea in the world that explains their meanings.
Got any longer words to share? Feel free to write them down on the chatbox or comments.

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Hi guys, got my blog updated. Check out my talent-time videos at the bottom of the blog posts. Also, check out the other videos like Azerothians Supervillains and Shaolin soccer. Nothing interesting going on the first 2 weeks of school. School is getting more boring. Learning new things without fun. Gotta go to Annual Parade today (Saturday) evening though. Wish me best of luck :)