What does Conchoidal mean in science?

What does Conchoidal mean in science?

The term conchoidal is used to describe fracture with smooth, curved surfaces that resemble the interior of a seashell; it is commonly observed in quartz and glass. Splintery fracture is breakage into elongated fragments like splinters of wood, while hackly fracture is breakage along jagged surfaces.

How do you say Helichrysum?

Helichrysum – gymnocephalum (hell-ik-riss-um jim-no-sef-uh-lum): Helichrysum italicum may be easy to pronounce, but its cousin, Helichrysum gymnocephalum, is another story entirely.

What does Hackly mean?

jagged
: having the appearance of something hacked : jagged.

What rocks have Conchoidal fracture?

Conchoidal fracture It often occurs in amorphous or fine-grained minerals such as flint, opal or obsidian, but may also occur in crystalline minerals such as quartz.

Is frankincense poisonous?

Frankincense is natural, but like many other natural substances, it can be poisonous. Some people who have used frankincense extract have experienced: stomach pain. nausea.

How do you use Helichrysum oil?

They can inhale helichrysum essential oil or use it topically. To inhale helichrysum essential oil, place drops of the oil in a bowl of hot water and then lean over the bowl and breathe in. People can also put drops of the essential oil in a diffuser to disperse the scent.

Who invented sphygmomanometer?

von Basch
In 1881, von Basch created the sphygmomanometer and the first non-invasive BP measurements. However, in 1896, Scipione Riva-Rocci developed further the mercury sphygmomanometer, almost as we know it today. The sphygmomanometer could only be used to determine the systolic BP.

How do you pronounce the longest word Pneumonoultramicilscopicsilicovolcanoconiosis?

Pneumonoultramicroscopicsilicovolcanoconiosis Pronunciation It is pronounced pneu·mo·no·ul·tra·mi·cro·scop·ic·sil·i·co·vol·ca·no·co·ni·o·sis.

What does the name Irene stand for?

peace
Spanish and Italian: from the female personal name Irene, from Greek Eirene ‘peace’.

What is the meaning of the word conchoidal?

Definitions for conchoidal kɒŋˈkɔɪd l con·choidal. Here are all the possible meanings and translations of the word conchoidal. Describing a type of irregular fracture that occurs in materials with no natural plane of separation, such as flint. Origin: [Cf. F. conchodal.]

Which is the best online dictionary for pronunciation?

HowToPronounce.com is a free online audio pronunciation dictionary which helps anyone to learn the way a word or name is pronounced around the world by listening to its audio pronunciations by native speakers.

Which is the best definition of a conchoidal depression?

Definition of conchoidal. : having elevations or depressions shaped like the inside surface of a bivalve shell. —.

What is the definition of a conchoidal fracture?

Of or relating to a mineral or rock surface that is characterized by smooth, shell-like curves. Obsidian and quartz often have conchoidal fractures. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.