Lexical Compendium

Wait... what is this? Sometimes I come across a word, phrase, idiom, quote, reference, bit of slang, person of interest, etc that either I don't know or I find amusing, interesting, etc. This is a collection of those items so that I can refer back to them in emails, texts, etc.

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phononics

Phononics is the study of the behavior and control of mechanical vibrations and acoustic waves in materials.

The word is derived from phonon (a quantum of vibrational energy in a crystal lattice, analogous to a photon in light). It seems to be a relatively new neologism, as it doesn't have an entry in conventional dictionaries.

I first came upon this word in a Science magazine article titled Does the mantis shrimp pack a phononic shield?. The study provides experimental proof that the mantis shrimp’s club acts like a biological shock absorber, using phononic filtering to prevent damage.


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References:

Tags: science, vocabulary

Date Added: 07 Feb 2025

tribology

Tribology is the scientific study of friction, lubrication, and wear between interacting surfaces in relative motion. It blends principles from mechanical engineering, materials science, chemistry, and physics.

The word was coined in 1966 by British mechanical engineer Peter Jost in a report to the UK government titled "Lubrication (Tribology) - A Report on the Present Position and Industry’s Needs". The word is formed from the Greek root tribos meaning rubbing.

During a trip with my brother, he told me about a tribological analysis his firm performed along with a write-up they published and this is how I was introduced to the term.

While looking up the origins of the word tribology, I thought it would fit perfect in an episode of Archer. The characters often use absurdly niche references followed by incredulity when nobody knows the reference.

[Scene: ISIS HQ hallway, someone slips slightly on a recently waxed floor]

Lana: Whoa -- can we not buff the floors like an Olympic luge track?

Archer: Who are you, Peter Jost?

Lana: Who?

Archer: Peter Jost? The father of tribology??

[Everyone stares blankly]

Archer (muttering): Seriously guys, read a book! Well, actually an obscure UK lubrication report from 1966.


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Tags: science, vocabulary, jargon, engineering

Date Added: 13 May 2025
Date Modified: 20 May 2025

"Mice lie and monkeys exaggerate."

Mice lie and monkeys exaggerate.

-- David B. Weiner, Ph.D. Professor, Department of Pathology and Laboratory Medicine Chair, Gene Therapy and Vaccine Program, CAMB Co-Leader Tumor Virology Program, Abramson Cancer Program University of Pennsylvania, Perelman School of Medicine

Dr. Weiner coined this aphorism while musing on the use of NHP (nonhuman primates) in HIV vaccines studies at a conference in 2008. In essence, animal models aren't necessarily predictive of how drugs will work in humans.

The phrase is often used in research papers and by science journalists. I can't recall where I first heard it, but I thought of it recently when a friend shared a blurb about how rapamycin is purported to have anti-aging benefits in humans. Though there is no evidence for this in humans, there have been studies with the drug on mice that have found that they live ~12% longer.


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References:

Tags: quote, aphorism

Date Added: 03 Oct 2024
Date Modified: 11 Dec 2024

orthosomnia

Orthosomnia is an obsession with getting "perfect" sleep. The word was coined in a 2017 article in the Journal of Clinical Sleep Medicine titled Orthosomnia: Are Some Patients Taking the Quantified Self Too Far?

We termed this condition “orthosomnia,” with “ortho” meaning straight or correct, and “somnia” meaning sleep, because patients are preoccupied or concerned with improving or perfecting their wearable sleep data. We chose this term because the perfectionist quest to achieve perfect sleep is similar to the unhealthy preoccupation with healthy eating, termed orthorexia.

I first encountered this term while listening to an episode of The Guardian's Science Weekly podcast called Is sleep perfectionism making us more exhausted?


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References:

Tags: vocabulary

Date Added: 22 Oct 2024

AGI

AGI stands for "Artificial General Intelligence." Unlike AI, AGI is meant to connote a system that exhibits human-like intelligence and is not trained for specific tasks.

Related: ASI (Artificial Super Intelligence), ANI (Artificial Narrow Intelligence), p(doom)


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References:

Tags: ai, computer-science

Date Added: 23 Jun 2024
Date Modified: 27 Jun 2024

albedo

Albedo is the measure of reflectivity of a surface, specifically Earth's ability to reflect solar radiation back into space. It is expressed as a percentage, with higher albedo indicating greater reflectivity.

I first came across this term while reading a SciTechDaily post about how scientists have a theory as to why global warming in 2023 exceeded predictions. The year 2023 was also had a record-low albedo.


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Tags: science, vocabulary

Date Added: 21 Dec 2024

p(doom)

p(doom) stands for "probability of doom" and is a term used when talking about AGI.


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References:

Tags: ai, computer-science

Date Added: 27 Jun 2024

rhodopsin

I learned, from sort of an unlikely source -- the National Park Service, the reason why "night vision" is reset after exposure to light.  That our pupils dilate  is probably obvious, but what I didn't know was that the body produces a protein called rhodopsin which, through a series of chemical reactions, gives our rods the ability to "see" in dim light.  The protein decays in bright light (though much slower in longer wavelengths, i.e. red light).  When depleted, it takes ~30m to regenerate.


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Tags: word, science, vision

Date Added: Unknown

spaghettification

Spaghettification refers to the streching and compressing that occurs as an object passes within a black hole's event horizon. The process was first described by Stephen Hawking in the book "A Brief History of Time."


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Tags: science, space

Date Added: 05 Jul 2024

stochastic parrot

Stochastic parrot is a term coined by Emily M. Bender, Timnit Gebru, et al. in a 2021 paper on the ethical risks of large language models called "On the Dangers of Stochastic Parrots: Can Language Models Be Too Big? 🦜."

It refers to how large language models generate text by probabilistically predicting the next word based on patterns learned from massive datasets, rather than understanding or reasoning like a human. The metaphor highlights how such systems mimic language without genuine comprehension.

In December 2022, shortly after ChatGPT was released, Sam Altman of OpenAI tweeted, "i am a stochastic parrot, and so r u."

Stochastic parrot was a 2023 American Dialect Society "Word of the Year."


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References:

Tags: vocabulary, ai, computer_science

Date Added: 28 Jan 2025