Dictionary » E » Essential

Essential

Essential

1. Belonging to the essence, or that which makes an object, or class of objects, what it is. Majestic as the voice sometimes became, there was forever in it an essential character of plaintiveness. (Hawthorne)

2. Hence, really existing; existent. Is it true, that thou art but a a name, And no essential thing? (webster (1623))

3. Important in the highest degree; indispensable to the attainment of an object; indispensably necessary. Judgment's more essential to a general Than courage. (Denham) How to live? that is the essential question for us. (H. Spencer)

4. Containing the essence or characteristic portion of a substance, as of a plant; highly rectified; pure; hence, unmixed; as, an essential oil. Mine own essential horror.

5. Necessary; indispensable; said of those tones which constitute a chord, in distinction from ornamental or passing tones.

6. (Science: medicine) Idiopathic; independent of other diseases.

(Science: biology) essential character, a class of volatile oils, extracted from plants, fruits, or flowers, having each its characteristic odour, and hot burning taste. They are used in essences, perfumery, etc, and include many varieties of compounds; as lemon oil is a terpene, oil of bitter almonds an aldehyde, oil of wintergreen an ethereal salt, etc.; called also volatile oils in distinction f 42f rom the fixed or nonvolatile.

Origin: cf. F. Essentiel. See essence.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Re: how to write a lab report

Lab reports are an essential part of all laboratory courses and usually a significant part of your grade. You can follow the steps 1. Title: The title says what you did. It should be brief and describe the main point of the experiment ...

See entire post
by rashedibragimov
Fri Sep 05, 2014 9:20 am
 
Forum: General Discussion
Topic: how to write a lab report
Replies: 4
Views: 2080

Bioinformatics Hands-On NGS Data Analysis Workshops 2014

... data (miRanalyzer) to join us for our microRNA workshop. This course titled microRNA Analysis Using High-Throughput Sequencing will cover the essential steps of small RNA-seq analysis from microRNA prediction to extensive downstream analyses. We also have a workshop on DNA Methylation Analysis ...

See entire post
by ecSeq
Mon Jul 07, 2014 2:54 pm
 
Forum: General Discussion
Topic: Bioinformatics Hands-On NGS Data Analysis Workshops 2014
Replies: 0
Views: 950

Humans Natural Habitat/Optimal Environment

... capitalist market if you like, in that stagnation is a disaster. You need things to stay dynamic in order for change to happen, and that change is essential. Whilst at this point in time you may prefer one environment to all others you will be able to adapt to others. The perfect environment in ...

See entire post
by Babybel56
Tue Mar 04, 2014 6:04 am
 
Forum: Evolution
Topic: Humans Natural Habitat/Optimal Environment
Replies: 2
Views: 3891

Biology tests

... the complete breakdown of immune function. For example if you had mentioned the T-helpers and macrophages you could have explained why these are essential for immune defence, and so why without them AIDS will happen.

See entire post
by Babybel56
Fri Feb 28, 2014 9:37 am
 
Forum: General Discussion
Topic: Biology tests
Replies: 1
Views: 1274

Does other animals have faster nerve speeds?

... big, insulated ones for processes that need to be very fast. For example the giant squid has an axon up to 1mm thick and is responsible for the essential system that allows it to pump water and move around. For escaping from trouble this quick response therefore merits a very, very quick response. ...

See entire post
by Babybel56
Fri Feb 28, 2014 8:55 am
 
Forum: General Discussion
Topic: Does other animals have faster nerve speeds?
Replies: 1
Views: 1360
View all matching forum results

This page was last modified 21:16, 3 October 2005. This page has been accessed 6,701 times. 
What links here | Related changes | Permanent link