Thread Tools Display Modes
Old 03-15-2002, 12:59 PM
Join Date: Oct 1999
Posts: 5,441
What does the prefix ipso mean?

I was trying to read an article in the current issue of JACS whenI ran into the word ipso chromic.

"Indeed, recording of the UV spectrum of 1 in alkaline conditions (pH12) led to a reversible ipsochromic shift (max 324 nm) and appearance of a second absorption (max 407 nm) that disappeared upon neutralization in agreement with the proposed structure."

J. Am. Chem. Soc., 124 (11), 2400 -2401, 2002

I tried every dictionary I know but can't find it. I figure maybe I can put the word together from it's latin roots, but I can't find a website that shows latin roots and their definitions.
Old 03-15-2002, 01:09 PM
Join Date: Apr 2000
Location: Chicago, IL USA
Posts: 18,887
Just guessing here but seeing if we can deduce a meaning...

From Merriam Webster:
Main Entry: ipĚso facĚto
Pronunciation: 'ip-(")sO-'fak-(")tO
Function: adverb
Etymology: New Latin, literally, by the fact itself
Date: 1548
: by that very fact or act : as an inevitable result

Main Entry: eo ipĚso
Pronunciation: A-O-'ip-(")sO
Usage: foreign term
Etymology: Latin
: by that itself : by that fact alone
From those two definitons I would guess that ipso means "by that". So, ipsochromic to me would mean "by that of chromium".

Maybe that doesn't make a lot of sense but there it is FWIW.
Old 03-15-2002, 01:19 PM
Join Date: Nov 2000
Location: Speed's trunk, usually
Posts: 2,005
Re: What does the prefix ipso mean?

Originally posted by Christopher
"Indeed, recording of the UV spectrum of 1 in alkaline conditions (pH12) led to a reversible ipsochromic shift (max 324 nm) and appearance of a second absorption (max 407 nm) that disappeared upon neutralization in agreement with the proposed structure."
It's been well over 10 years since I've buried a nose in JACS. The ole Chem degree has gotten dusty. Thanks for reminding me what it's like; I sometimes miss it.

Don't you just love it when those chemists start talking dirty like that?

BTW, I seem to understand that the term ipso means, in this context, "entire" such that the passage is trying to say that the entire spectrum shifted the same amount and a new abs line was found at 407 nm. This can be thought of the opposite of what can be seen in NMR readings where some res-lines shift and other stay put (or even shift in the opposite direction.)

Don't hold me to that, though.
I ain't sayin' I'm cheap, but I straight line depreciated my alarm clock as a business expense.
Old 03-15-2002, 02:47 PM
Join Date: Mar 2002
Location: KCMO
Posts: 11,121
"Ipso" is a form of a Latin word usually translated as "itself." Sometimes in idiomatic English it's translated as "very," as in "that very man = that man himself." As a prefix, it usually means "self-."

"Ipso facto" is in the ablative case (absent in English), which in Latin implies meanings that require a preposition in English. Hence when we say "ipso facto" means "by the fact itself," the word "by" is suggested by the particular Latin case used, and not by the actual words.

Because Latin inflection uses various word endings to indicate grammatical case, the letters that follow "ips-" can vary in different uses of the word. Talking about that very fact in the objective case would yield "ipsum factum" in Latin. Unlike "ipso facto," that phrase does not express a meaningful thought in English, so you never see it.

┬ź Previous Thread | Next Thread ┬╗
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 07:36 PM.

Copyright © 2017
Best Topics: vera ellen neck alberta badlands face ddlg pet names patriotism is bad key swap party nitrous oxide buying zippo supplies elvis penis basketball circle electric blanket wattage glass of squash portland to eureka incredimail virus sunny godfather pam teflon sweating from hangover temperature 96.6 telephone parts lifelock wiki mississippi accent i can't wink fire hardening wood senator palantine phillies message board baron symbol wifey does anal guava seeds arugula spicy crispin letterman uhaul trailer locks reverse cross product define musume gin up definition hot gorgeous divide by percentage cox vs fios how to humanely euthanize a fish how to make food pass through faster what does tolo stand for cleveland hopkins airport passenger drop off are the addams family vampires raiders of the lost ark flying wing paypal no balance needed to shop how to learn to weld test if outlet is grounded adhesive rubber strips home depot does smoking warm you up does iron supplement cause constipation gluing foam to foam bus error 10 c++ directv genie usb port how long does a trickle charger take how high can you jump into water and live jay leno jaywalking geography how to reheat olive garden fettuccine alfredo how long after the sell by date is ground beef good at home strep test cvs how to play scribbage run away from the police how to get spray paint off driveway steal my sunshine meaning pies jesu domine dona eis requiem what the hell is grimace clubber lang vs ivan drago do you have to fill out all of the ballot when voting sneed's feed and seed formerly chuck's