n.

1. The material or substance on which an enzyme acts.
2. Biology. A surface on which an organism grows or is attached.
3. An underlying layer; a substratum.
4. Linguistics. An indigenous language that contributes features to the language of an invading people who impose their language on the indigenous population.

[From SUBSTRATUM.]

The base layer of a structure such as a chip, multichip module (MCM), printed circuit board or disk platter. Silicon is the most widely used substrate for chips. Fiberglass (FR4) is mostly used for printed circuit boards, and ceramic is used for MCMs. Disk substrates are typically aluminum, glass or plastic.

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1. The substance on which an enzyme acts.

2. The medium on which micro-organisms grow.

1. The underlying material to which a finish is applied, or by which it is supported.
2. A material upon which an adhesive, film, coating, etc., is applied.

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(or substratum) The dark side of substance. The thing that bears properties, as opposed to the properties themselves, but conceived as an indescribable ‘something we know not what’, since any characterization of it merely mentions one of the properties with which it has to be contrasted. Berkeley charges Locke, perhaps unfairly, with requiring that this idea be intelligible when, according to Berkeley, it is not.

Any substance upon which an enzyme acts.

• s. binding site — part of the active site of an enzyme which includes the amino acid residues that come into contact with the substrate.
• s. specificity — range of substrates that can be catalytically converted to product by an enzyme.
• suicide s. — see suicide substrate.

1. An underlying layer. Usually refers to subsoil.
2. A medium used for growing plants, particularly in laboratory experiments.

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Dansk (Danish)
n. - substrat, underlag, grundlag

Nederlands (Dutch)
voedingsbodem, ondergrond

Français (French)
n. - substrat, (gén) fond, (Géol) sous-sol, substratum, (Sociol) couche, (Ling, Philos) substrat

Deutsch (German)
n. - Nährboden

Ελληνική (Greek)
n. - (βιολ.) υπόστρωμα

Italiano (Italian)
substrato

Português (Portuguese)
n. - substrato (m)

Русский (Russian)
нижний слой, основание, субстрат, подкладка

Español (Spanish)
n. - substrato

Svenska (Swedish)
n. - substrat, underlag

中文（简体） (Chinese (Simplified))
底层, 底土层, 下层

中文（繁體） (Chinese (Traditional))
n. - 底層, 底土層, 下層

한국어 (Korean)
n. - 기질, 토대

日本語 (Japanese)
n. - 下層, 下層土, 基質, サブストレート, 基板

العربيه (Arabic)
‏(الاسم) يطرح‏

עברית (Hebrew)
n. - ‮יסוד, בסיס, תשתית, רובד תחתי, תת-שכבה‬

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