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heterodyne 

is a signal processing technique invented in 1901 by Canadian inventor-engineer Reginald Fessenden that creates new frequencies by combining or mixing two frequencies. Heterodyning is used to shift one frequency range into another, new one, and is also involved in the processes of modulation and demodulation. The two frequencies are combined in a nonlinear signal-processing device such as a vacuum tube, transistor, or diode, usually called a mixer. In the most common application, two signals at frequencies f1 and f2 are mixed, creating two new signals, one at the sum f1 + f2 of the two frequencies, and the other at the difference f1 − f2. These new frequencies are called heterodynes. Typically only one of the new frequencies is desired, and the other signal is filtered out of the output of the mixer. Heterodynes are the mathematical dual of the phenomenon of "beats" in acoustics.

A major application of the heterodyne process is in the superheterodyne radio receiver circuit, which is used in virtually all modern radio receivers.
I thought heterodyne meant the oral copulation of a heterosexual.

heteromantic 

A romantic attraction to a member of the opposite sex, can include sexual attraction or not.

In the case of asexuals, heteromantic would mean they have romantic feelings towards the opposite sex, but not any sexual desire.

The desire for a romantic relationship with someone of the opposite sex
I am physically attracted to both males and females, but am only really interested in dating males. So I am bisexual but heteromantic.
heteromantic by MALM October 12, 2012

heteromantic homosexual 

Someone who is romantically attracted to the opposite gender, but does not feel any sexual attraction towards them, and who has sexual attraction towards the same gender
Joe: Hey bro, I bet you could fuck her if you wanted!
Josh: Nah, not interested in females. At least not having sex with them.

Joe: Wait, so are you gay?

Josh: No, I feel romantic feelings for girls, But I don't want to have sex with them. But I am willing to have sex with another male.

Joe: So you're heteromantic homosexual.

Josh:Yup!

heterosona 

When a queer person tries to/has to look straight/cis, they turn into their heterosona (hetero + persona)
"i had to turn into my heterosona last week because we visited my grandparents"
heterosona by sparklyspaceboy July 26, 2023
1. Not in agreement with accepted beliefs, especially in church doctrine or dogma.

2. Holding unorthodox opinions.
That woman is a heterodox menace to our utopian society.
heterodox by Hein Hitler June 4, 2007

Heterocontextual

A person, ususally a guy, who identifies himself as "straight," who, IN THE RIGHT CONTEXT (usually quick & easy access to a willing partner), will eagerly engage in sexual activity with a person of the same sex.
For a guy who calls himself "straight,"Victor gives damn good head. He's a hetero all right; a horney heterocontextual; he'll do whomever's there in order to get his nutt.
Heterocontextual by JimTimH. December 10, 2010