ADC

1. Advice of duration and charge, a telephone service by which the operator advises the caller of the cost of the call he or she has just made, now called Charge Advice (also AD and C)
2. Aide-de-camp
3. Analogue-to-digital converter (computing)

• straighten out
• straightens
• straighter
• straightest
• straight-faced
• straight fight
• straight fights
• straight flush
• straightforth
• straightforward
• straightforwardly
• straightforwardness
• straight from the horse's mouth
• straight from the shoulder
• straight-from-the-shoulder
• straight gear
• straighting
• straightish
• straightjacket
• straight-jet
• straightly
• straight man
• straight men
• straightness
• straightnesses