What word is this?

[Peter R]

It is only recently that I have come across the word substrate; yes folks, it may seem strange to you but after 65 years, and working with various materials I have never heard this word before.
I looked it up in the dictionary and I am given substratum - the material that enzymes or fement works on.
I understand the word to mean any material that is being used, or the work piece, no matter what the materila is.
Is my spelling correct? or is it another word? I do not have any paperwork with the word in it at the moment.

Peter R.

[Barry_White]

Google is your friend.

http://computing-dictionary.thefreedictionary.com/substrate

[bitingmidge]

Peter,

Well you had me running to the dictionary myself, because I thought you must have had a dud copy! To my complete surprise, it doesn't appear in any of five different modern publications that I searched!

Off to my old stand-by, "Funk and Wagnell's New Standard Dictionary of the English Language" (1943 revision).

Sure enough:
Substrate (rare) 1) to scatter or place beneath 2) A substratum

In modern building work the term is usually (quite commonly) used in connection with surface coatings, (paint, waterproofing, tiles) to describe the untreated material, and/or the preparitary (sp?) coatings. For instance one would need a a different primer over a brick substrate than a steel one.

Mrs Macquarie obviously needs a backdate!
Cheers

P
:cool: :cool:

[Sturdee]

It is only recently that I have come across the word substrate;

Peter,

As a woodworking term I understand it to be the material onto which a veneer is glued. It usually is a cheaper type of wood or MDF.


Peter.

[hexbaz]

The definition posted by Barry, regarding silicon as a substrate for integrated circuits is slightly inaccurate - especially when it says that sapphire is used as a substrate instead of silicon for radiation hardened devices.

I used to work with military IC development, and what is used in that arena is the (much more expensive) Silicon On Sapphire (SOS). In this case, sapphire replaces aluminium oxide, which is the substrate normally used... So basically the substrate, in IC terms, is the underlying area on which the silicon is laid down. Silicon is NOT the substrate.

In woodworking terms the substrate could be argued as the wood (or fibreboard) which underlays, say, a veneer.

[Peter R]

Google is your friend.

http://computing-dictionary.thefreedictionary.com/substrateI looked at this site, Bazza, and it does give an answer, but it is interesting that that answer has been contested; argue with a dictionary? Not this little black duck!
But, yes, it does look like it is the material that is being worked with, maybe in connection with painting, veneering or staining as it was with the Wattyl fact sheet on Stylewood that I first came across the word.
However, let the discussion continue as it appears that there are a few versions on its usage and meaning.
Thanks for the replys. fellas, this is a great web site...even if you have a friend named Google.
Peter R.

[vsquizz]

sub·strate (sŭb'strāt') http://www.gurunet.com/content/img/pron.gif
n.
The material or substance on which an enzyme acts.
Biology. A surface on which an organism grows or is attached.
An underlying layer; a substratum.
Linguistics. An indigenous language that contributes features to the language of an invading people who impose their language on the indigenous population.
[From <SMALL>SUBSTRATUM</SMALL> (file:///C:/Documents%20and%20Settings/All%20Users/Application%20Data/GuruNet/GuruNetCache/atomicalookup_1555_[S0853800]).]

Gurunet is the go

Cheers

[RETIRED]

http://www.dict.org/bin/Dict?Form=Dict1&Query=substrate&Strategy=*&Database=*


5 definitions found for substrate

From Webster's Revised Unabridged Dictionary (1913) :

Substrate \Sub"strate\, n.
A substratum. [R.]


From Webster's Revised Unabridged Dictionary (1913) :

Substrate \Sub"strate\, a.
Having very slight furrows. [R.]


From Webster's Revised Unabridged Dictionary (1913) :

Substrate \Sub*strate"\, v. t. [L. substratus, p. p. of
substrahere. See Substratum.]
To strew or lay under anything. [Obs.]

The melted glass being supported by the substrated
sand. --Boyle.


From WordNet (r) 2.0 :

substrate
n 1: the substance acted upon by an enzyme or ferment
2: any stratum lying underneath another [syn: substratum]


From The Free On-line Dictionary of Computing (27 SEP 03) :

substrate

The body or base layer of an integrated circuit,
onto which other layers are deposited to form the circuit.
The substrate is usually Silicon, though Sapphire is used for
certain applications, particularly military, where radiation
resistance is important. The substrate is originally part of
the wafer from which the die is cut. It is used as the
electrical ground for the circuit.

(1996-04-07)



Prefer Copernic myself. :D

[ubeaut]

Too much typing for me. All I got to say is yous guys need to get a Macquarie Dictionary. Theres a whole lot of stuff on it in there (well there is in the one I have anyway).

A great Aussie dictionary that wont let you down (got lots of great swear words and other rude stuff too). :rolleyes:

[Peter R]

Who came up with this stupid question? It is driving me mad; well OK! that is not a drive, more like a short putt.
My conclusion: Substrate (noun) is an ambiguous description of another ambiguous substance, ie. the material that becomes a substrate can be anything that is covered.
A substrate is not a substrate until it is covered. One could not point a slab of timber and say that is a substrate. Correctly you would say that is an intending substrate.
If a substrate is something that is covered by another thing or object it could lead to the following endearment or pick up line. "How about becoming my little substrate tonight?" And, in a disparaging comment : "She has been a substrate that many times that she now has veeneriial disease." (sorry).
Midge's description: a metal substrate would need a different undercoat than a cement one ( or something like that) is not politically correct simply because until they are covered they are not a substrate.
Using the word substrate is limited to the word itself and has no physical meaning as would car or horse, which have a distinctive meaning and are both nouns and only need to be covered if it is cold or there is hail about. So then, I guess they would become substrates too.
Aw Bugga it! I give up.
Peter R.

[Dion N]

I would guess that the word comes from Greek or Latin roots.

Sub meaning below (as in submarine or sub standard)

Strata meaning a layer (as in a Strata Title for a unit or various strata within a geological formation)

Hence substrate means something below a layer or perhaps the lowest layer