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Abbrev. for Infrared Space Observatory, an orbiting infrared astronomy observatory launched by the European Space Agency (ESA) on top of an Ariane-4 rocket from Kourou, French Guiana, Nov. 1995. The 2.5-tonne, 5.3-meter-long ISO was the most sensitive infrared satellite of its time, using four detectors cryogenically cooled by liquid helium to capture and study weak infrared radiation from such sources as cold gas and dust clouds and regions of star birth and star death, as well as quasars and remote galaxies. Lying in the focal plane of a telescope with a 60-centimeter mirror, the four detectors were (1) an infrared camera (ISOCAM) covering the range 2.5–17 μm; (2) a photopolarimeter (ISOPHOT) functioning between 2.5 and 240 μm; (3) a shortwave spectrometer covering the 2.4–45 μm band; and (4) a longwave spectrometer operating between 45 and 196.8 μm. These instruments revealed numerous hitherto unknown objects that were ‘visible’ only in infrared light. The satellite operated for about 30 months. Its mission ended in Apr. 1998 when its coolant finally ran out.



a lime-sulfur chemical decoction for combating mites and ticks (acaricide).

International Standards Organization, International Organization for Standardization (ISO)

A body which promotes the development of world-wide standards and which publishes such standards.



(1) For the light measurement standard, see ISO speed.

(2) For the optical disc format standard, see ISO image.

(3) (International Organization for Standardization, Geneva, Switzerland, An organization that sets international standards, founded in 1946. The U.S. member body is the American National Standards Institute (ANSI). ISO deals with all fields except electrical and electronics, which is governed by the older International Electrotechnical Commission (IEC). With regard to information processing, ISO and IEC created JTC1, the Joint Technical Committee for information technology.

ISO carries out its work through more than 185 technical committees and 2,700 subcommittees and working groups and is made up of standards organizations from more than 95 countries, some of them serving as secretariats for these technical bodies.

Full, Correspondent and Subscriber Members
Of the 164 ISO member bodies, more than a hundred are full members that influence ISO standards development. Approximately 50 Correspondent members attend meetings as observers. A handful of Subscriber members stay up-to-date on ISO activities but do not sell or adopt ISO standards nationally as do all the others. See ISO/IEC.
References in periodicals archive ?
In preparing an ISO plan, consideration should be given to possible means of facilitating the exercise of ISOs by employees.
Thus, those restrictions must be ignored when valuing the shares obtained via the ISOs under Sec.
The AMT paid as a result of exercising an ISO generates a minimum tax credit (MTC) that can offset a regular tax liability in future years.
Traditional ISO planning assumes that stock prices are stable or rising.
If exercising an ISO makes the individual subject to the AMT, the comparative advantage of ISOs to the executive is reduced.
422, an employee cannot dispose of the stock acquired by the exercise of an ISO within two years from the option grant date or one year after the exercise date.
Carefully time the placing of bets: If possible, optionees should exercise ISOs early in the year, especially if there is a significant spread between the option price and the stock's FMV.
* A tax-smart middle ground is to exercise enough ISOs each year to equalize tentative minimum tax with the regular tax.
Tad exercises 1,000 ISOs at $25 per share when the fair market value of Market Corp stock is $75.
ISOs and options granted under ESPPs do not generate option income to the employee when granted or exercised.
For ISOs granted after 1986, no more than $100,000 in options (valued when they are granted) may be exercised for the first time in any one year.