orthodromic

adjective
or·tho·drom·ic | \ˌȯr-thə-ˈdräm-ik \

Medical Definition of orthodromic 

1 : proceeding or conducting in a normal direction used especially of a nerve impulse or fiber orthodromic neural stimulation

2 : characterized by orthodromic conduction in orthodromic tachycardia, the atrial impulse conducts in an antegrade direction from the atria through the AV node— Norris Lai & Melvyn Rubenfire

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not any or not one

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