compact

compact [Origin: compactus, past participle of compingere 'to put together', from com- ( COM-) + pangere 'to fasten']
compress [Origin: compressare 'to press hard', from Latin comprimere 'to compress', from com- ( COM-) + premere 'to press']

compact有没有“压缩”的意思呢？put together算最低程度的压缩，如把散乱的物品放入箱中。compress是press hard.

A compact (also powder box, powder case and flapjack) is a cosmetic product. It is usually a small round metal case and contains two or more of the following: a mirror, pressed or loose face powder with a gauze [纱布; 薄纱] sifter and a powder puff [a small round piece of soft material used to spread powder on the face or body].

In astronomy, the term compact star (or compact object) refers collectively to white dwarfs, neutron stars, and black holes. It would grow to include exotic stars [奇异星] if such hypothetical, dense bodies are confirmed to exist. All compact objects have a high mass relative to their radius, giving them a very high density, compared to ordinary atomic matter.

Compact car is a vehicle size class — predominantly used in North America — that sits between subcompact cars and mid-size cars. The present-day definition is equivalent to the European C-segment or the British term "small family car". However, prior to the downsizing of the United States car industry in the 1970s and 1980s, larger vehicles with wheelbases up to 110 in (2.79 m) were considered "compact cars" in the United States.

A级一般指轴距2.3-2.6米、发动机排量1.4-2.0升。B级2.6-2.8米、1.6-2.5升。C级2.8-3.0米、2.4-3.0升。

Compact disc (CD) is a digital optical disc data storage format released in 1982. The format was originally developed to store and play only sound recordings but was later adapted for storage of data (CD-ROM). Several other formats were further derived from these, including write-once audio and data storage (CD-R), rewritable media (CD-RW), Video Compact Disc (VCD), Super Video Compact Disc (SVCD), Photo CD, PictureCD, CD-i, and Enhanced Music CD. The first commercially available Audio CD player was released in October 1982.

Standard CDs have a diameter of 120 millimetres (4.7 in). The Mini CD has various diameters ranging from 60 to 80 millimetres (2.4 to 3.1 in). The compact disc is an evolution of LaserDisc technology, where a focused laser beam is used that enables the high information density required for high-quality digital audio signals. The standard home video LaserDisc was 30 cm (12 in) in diameter and made up of two single-sided aluminum discs layered in plastic.

Compact as used in politics may refer broadly to a pact or treaty; for example:

• The United Nations Global Compact is a non-binding United Nations pact to encourage businesses worldwide to adopt sustainable and socially responsible policies, and to report on their implementation. The UN Global Compact is a principle-based framework for businesses, stating ten principles in the areas of human rights, labor, the environment and anti-corruption. Under the Global Compact, companies are brought together with UN agencies, labor groups and civil society. Cities can join the Global Compact through the Cities Programme.
• Compact government, a type of colonial rule utilized in British North America
• Mayflower Compact, the first governing document of Plymouth Colony

六级/考研单词: compact, fasten, compress, powder, cosmetic, astronomy, dwarf, exotic, hypothesis, dense, predominant, equivalent, unite, digit, data, farther, derive, audio, medium, diameter, millimetre, evolve, laser, beam, aluminum, pact, treaty, globe, sustain, implement, colony, utilize