Contraction (grammar)

A contraction is a shortened version of the written and spoken forms of a word, syllable, or word group, created by omission of internal letters and sounds.

In linguistic analysis, contractions should not be confused with abbreviations nor acronyms (including initialisms), with which they share some semantic and phonetic functions, though all three are connoted by the term "abbreviation" in loose parlance. Contraction is also distinguished from clipping, where beginnings and endings are omitted.

The definition overlaps with the grammatical term portmanteau (a linguistic blend), but a distinction can be made between a portmanteau and a contraction by noting that contractions are formed from words that would otherwise appear together in sequence, such as do and not, whereas a portmanteau word is formed by combining two or more existing words that all relate to a singular concept which the portmanteau describes.

English

English has a number of contractions, mostly involving the elision of a vowel (which is replaced by an apostrophe in writing), as in I'm for "I am", and sometimes other changes as well, as in won't for "will not". These contractions are commonly used in speech and in informal writing, though tend to be avoided in more formal writing.

ID

ID, Id, id or I.D. may refer to:

Identity

Fields of study

Computer science

Medicine and psychology

Incision and drainage

Incision and drainage and clinical lancing are minor surgical procedures to release pus or pressure built up under the skin, such as from an abscess, boil, or infected paranasal sinus. It is performed by treating the area with an antiseptic, such as iodine-based solution, and then making a small incision to puncture the skin using a sterile instrument such as a sharp needle, a pointed scalpel or a lancet. This allows the pus fluid to escape by draining out through the incision.

Good medical practice for large abdominal abscesses requires insertion of a drainage tube, preceded by insertion of a PICC line to enable readiness of treatment for possible septic shock.

Incision and drainage is often abbreviated as "I&D" or "IND" by medical professionals.

Adjunct antibiotics

Uncomplicated cutaneous abscesses do not need antibiotics after successful drainage.

In incisional abscesses

For incisional abscesses, it is recommended that incision and drainage is followed by covering the area with a thin layer of gauze followed by sterile dressing. The dressing should be changed and the wound irrigated with normal saline at least twice each day. In addition, it is recommended to administer an antibiotic active against staphylococci and streptococci, preferably vancomycin when there is a risk of MRSA. The wound can be allowed to close by secondary intention. Alternatively, if the infection is cleared and healthy granulation tissue is evident at the base of the wound, the edges of the incision may be reapproximated, such as by using butterfly stitches, staples or sutures.

FI

FI, Fi or fi may refer to:

In arts and entertainment

Businesses and organizations

Places

General Dynamics F-16 Fighting Falcon variants

A large number of variants of the General Dynamics F-16 Fighting Falcon have been produced by General Dynamics, Lockheed Martin, and various licensed manufacturers. The details of the F-16 variants, along with major modification programs and derivative designs significantly influenced by the F-16, are described below.

Pre-production variants

YF-16

Two single-seat YF-16 prototypes were built for the Light Weight Fighter (LWF) competition. The first YF-16 was rolled out at Fort Worth on 13 December 1973 and accidentally accomplished its first flight on 21 January 1974, followed by its scheduled "first flight" on 2 February 1974. The second prototype first flew on 9 March 1974. Both YF-16 prototypes participated in the flyoff against the Northrop YF-17 prototypes, with the F-16 winning the Air Combat Fighter (ACF) competition, as the LWF program had been renamed.

F-16 FSD

In January 1975, the Air Force ordered eight full-scale development (FSD) F-16s – six single-seat F-16A and a pair of two-seat F-16B – for test and evaluation. The first FSD F-16A flew on 8 December 1976 and the first FSD F-16B on 8 August 1977. Over the years, these aircraft have been used as test demonstrators for a variety of research, development and modification study programs.

McDonnell Douglas F-15E Strike Eagle

The McDonnell Douglas (now Boeing) F-15E Strike Eagle is an American all-weather multirole strike fighter, derived from the McDonnell Douglas F-15 Eagle. The F-15E was designed in the 1980s for long-range, high speed interdiction without relying on escort or electronic-warfare aircraft. United States Air Force (USAF) F-15E Strike Eagles can be distinguished from other U.S. Eagle variants by darker aircraft camouflage and conformal fuel tanks mounted along the engine intake ramps.

The Strike Eagle has been deployed for military operations in Iraq, Afghanistan, and Libya, among others. During these operations the F-15E has carried out deep strikes against high-value targets, combat air patrols, and provided close air support for coalition troops. It has also been exported to several countries.

Development

Origins

The McDonnell Douglas F-15 Eagle had been introduced by the United States Air Force (USAF) as a replacement for its fleet of McDonnell Douglas F-4 Phantom IIs. However, unlike the F-4, the F-15 was strictly designed for the air-superiority mission with little consideration for a ground-attack role; the F-15 Special Project Office opposed the idea of F-15s performing the interdiction mission, giving rise to the phrase "Not a pound for air to ground." In service, the F-15 was a very successful fighter, with over 100 aerial combat victories and no losses in air-to-air combat.