Doppler ultrasound is a type of ultrasound that depends on the Doppler Effect, a change in the wave's frequency, which can occur from the motion of a reflector, such a red blood cell. We experience the Doppler Effect when, for example, an ambulance approaches us, passes and then drives away.
Definition of PLACODERM. : any of a class (Placodermi) of extinct chiefly Devonian fishes with an armor of bony plates and primitive jaw structures.ADVERTISEMENT. New Latin Placodermi, ultimately from GK plak-, plax + derma skin â more at derm-. any of a class (Placodermi) of extinct chiefly Devonian fishes with an armor of bony plates and primitive jaw structures. ADVERTISEMENT.
A hypocorism (/haÉªËpÉkÉrÉªzÉm/; from Greek á½ÏÎ¿ÎºÎ¿ÏÎ¯Î¶ÎµÏÎ¸Î±Î¹ hypokorizesthai, to use child-talk), also known as a pet name or calling name, is a shorter or diminutive form of a word or given name, for example, when used in more intimate situations as a nickname or term of endearment.