Maria Hill: What does S.H.I.E.L.D. stand for, Agent Ward?
Grant Ward: Strategic Homeland Intervention, Enforcement and Logistics Division.
Maria Hill: And what does that mean to you?
Grant Ward: It means someone really wanted our initials to spell out “shield.”

Two days ago the UK press reported that the Minister for Defence Procurement, Welsh Conservative MP Stuart Andrew, had declared war. On acronyms. Confounded and irritated by the number of these abbreviations circulating in his office and beyond, he ordered staff to avoid them at all costs. ‘He got fed up with people coming into his office and reeling off a list of letters and assuming he knew what they were referring to,’ a source close to the minister said. ‘I thought DVD had something to do with movies!’ the hapless minister (who has never served in the armed forces) had quipped at a meeting four weeks earlier. DVD was the name of the event at which he was speaking. It stands for ‘defence vehicle dynamics’.

The flustered politician may have a point – one of the first documents to cross his desk was the latest 402-page guidebook to terminology used in the MOD (Ministry of Defence)*, referencing such titles as AARADCOM – the Army Armament Research and Development Command, and explaining that the initials CCU, for instance, could refer to
Central Control Unit
Certificate of Clearance for Use (for software)
Cockpit Control Unit
Combat Control Unit
Common Control Unit
Communication Control Unit
Computer Crime Unit
In vain did an unnamed MOD spokesperson respond: ‘These terms are used between subject matter experts and not with the general public.’

‘Acronym’ entered English in 1940, as a translation of German akronym, first attested in 1921. It is composed of acro- from Greek akron (tip or top) and the English combining form -onym, from Greek onoma, name. It denotes a word made up of initials or parts of other words, and should be pronounced as a word in its own right. It is not the same as an ‘initialism’ such as BBC or VIP or PC, where the letters are pronounced separately (the minister’s DVD falls into this category), or an abbreviation such as etc. or lb (pound) where the relationship between form and sound is not straightforward. So NATO, AWOL, laser (for ‘light amplification by simulated emission of radiation’, radar (‘radio detection and ranging’) are acronyms: ASAP (‘as soon as possible’) is an acronym if said like a word, BOGOF (‘buy one, get one free’) too, but not when said as separated letters.
Some more modern three-letter combinations are genuine acronyms – SIM (card) from ‘subscriber identity module’, GIF (‘ graphics interchange format’), however you pronounce it, and PIN (‘personal information number’) among them – but those familiar items of business-speak, ROI, SEO, B2B, SME – and now AI – are not, and nor, ironically is the disapproving or jokey shorthand TLA, for ‘three-letter acronym’ itself.
Lighthearted coinages SNAFU (‘situation normal, all fouled up’) or BOHICA (the oppressed officeworker’s injunction to ‘bend over, here it comes again’) are acronyms, but only a few of the so-called acronyms used in messaging and on social media really qualify: BTW, IDK, IMHO, SMH, TL;DR and the rest are strictly speaking initialisms. YOLO, LOL and ROFL, providing they are uttered in full, are among the exceptions.
The reason for the proliferation of acronyms, initialisms and abbreviations, and the justification for their use are obvious. In an accelerated culture they save us from having to – literally – spell out what we have to say or write and at the same time impart an idea of novelty, urgency and dynamism. As my correspondent Graham Guest observed on Twitter in a spoof response to Stuart Andrew’s protestations: ‘Minister, my radio detection and ranging equipment has just picked up a group of sea, air, lands wearing self-contained underwater breathing apparatus diving gear.’
Acronyms are very often controversial, in the same way as jargon and slang, in that they mystify and intimidate those who aren’t familiar with them, and seem to confer prestige and privilege on those who know how to use them. They can reinforce an insider/outsider imbalance in power in the workplace, the seminar – or the ministerial briefing. A very simple test, though, is to try and replace the offending acronym with its full translation or explanation and see if the resulting sequence of speech, or text, sounds or looks viable. If it’s necessary to introduce a new abbreviated form, it must be glossed (translated into simple language) the first time it is used, and, as with all insider codes, should only be employed in a context where interlocutors, partners, stakeholders, clients or audiences will readily understand it.
In April 2019 the BBC tried to forestall mockery of the acronyms peppering the script of its Line of Duty series by posting this synopsis:
‘A UCO is embedded in an OCG who was deployed as a CHIS but is AWOL. The SIO, who loves a REG 15, and his DI and DS from AC-12 are investigating because of the ED905 HGV ambush which the OCG set up as an RTC. They’re hunting H. Let’s go.’

You can hear me chatting about the latest acronym wars on BBC5Live radio (the sequence begins at 47 minutes 26 seconds):
https://www.bbc.co.uk/radio/play/m0000pvp
As a footnote, my book of buzzwords and jargon, first published in 2007, contains examples of acronyms and abbreviations, many still in use, together with observations on the status conferred by mastering business-speak…

*An earlier version of it is here if you want to consult it:
Click to access acronyms_and_abbreviations_dec08.pdf