Used in video-conferencing. A system which allows people in different places to view and edit the same document at the same time on their computers.

Known in the UK as Pound-Cost Averaging. The practice of investing a fixed amount of money at fixed times in particular shares, whatever their price. A higher share price means less shares are purchased and a lower share price means more shares can be purchased.

In the entertainment industry, a piece of equipment on wheels which allows the camera to move smoothly for long walking shots.

an internet business, or the internet business sector.

In the film and TV industry, a person who stands in, or is substituted, for a principal actor.

A clause in a life insurance policy where the insurance company agrees to pay double the face value of the policy in the event of accidental death.

A method of testing a new product, usually medicine, in which neither the people trying the product nor those administering the treatment know who is testing the real product and who has been given a placebo containing none of the product.

The practice, usually regarded as unethical, of receiving two incomes or benefits from the same source, for example receiving a pension and consultancy income from the same employer.

An accounting method which results in balanced ledgers, i.e., for every transaction a credit is recorded in one account and a debit is recorded in another.

A birthing or labour coach, from the greek word doule, meaning female slave.