First published in 1954, this is a story of the end of a marriage. Evelyn, a distinguished barrister, has a beautiful wife 15 years his junior called Imogen. She is submissive and passive to the point that she almost has no character of her own, and becomes more so the longer the novel goes on.

Their plain neighbour, Blanche, is two years older than Evelyn. She’s presented as unremarkable in every respect, but becomes an object of fascination for Evelyn, and also an 11-year-old boy, in a weird narrative choice. The fascination is attributable to the fact that she actually has a character of her own, some opinions, and can converse reasonably.

Evelyn and Blanche start an affair; it takes forever for Imogen to realise what’s going on, and she just sort of subserviently leaves.

I did not enjoy this. The characters are all thoroughly unlikable, and are living in unthinkable social straitjackets. Almost everything they did or said made me want to fling the book across the room—though I didn’t because it was a rather lovely original from the London Library.

But mostly, this book is slow. It’s not slow in the sense of contemplative and reflective, it’s just stuffed with loquacious description and scene-setting.

This was absolutely not for me.

I recently began reading The Tortoise and the Hare by Elizabeth Jenkins, first published in 1954. Early on, Jenkins describes a character’s dark eyes, and where I would use the word ‘irises’, Jenkins used the word ‘irids’:

Her skin had the warm whiteness of marble in sunlight, her eyes were so dark the irids were indistinguishable from the pupils; the whites were a pale blue.

Why have I never seen or heard the word ‘irids’ before? Where did it come from? Why don’t we use it anymore?

To the OED!

As it turns out, the distinction between the words is not massively clear: as you’d guess, they share an etymology.

Certainly, ‘iris’ is more common than ‘irid’ these days, though some people prefer ‘irides’—with that extra ‘e’—as a plural form rather than ‘irises’. Indeed, ‘irides’ is listed in the 1900 OED as the preferred plural. There are two iris-related adjectives listed in the OED, both of which prefer a ‘d’ over an ‘s’: ‘iridal’ and ‘iridic’.

Comparing the frequency of usage of ‘irid’ and ‘iris’ is complicated by the fact that ‘irid’ is specific to the structure in the eye and the genus of plants, whereas ‘iris’ can also refer to the Greek goddess, a shape of crystal, and an asteroid—among other things.

One of the other things that can be described as an ‘iris’ is a rainbow. You might think you’ve never heard of this usage, but you probably have—just with a ‘d’ form of the word. The much more common word ‘iridescent’ is used to describe items that show many different colours when seen from different angles. ‘Iridescent’ is an adjective related to ‘iris’ in its ‘rainbow’ sense.

The preference for ‘iris’ as the anatomical term seems to have followed the standardisation of terms as medical publishing became a thing: Gray’s Anatomy has consistently used ‘iris’ since its first publication in 1858, and most textbooks—and latterly medical journals—followed suit. As medical science advanced rapidly in the 19th and 20th centuries, there was a strong push towards the standardisation of medical terms to ensure clear communication between medical professionals: see also the virtually total replacement of ‘apoplexy’ with ‘stroke’, of ‘consumption’ with ‘tuberculosis’, and of ‘dropsy’ to ‘oedema’.

Curiously, though, ‘irid’ was already pretty uncommon by the time Jenkins’s novel was published: its frequency of usage was similar to today’s. It was, however, much closer to its peak fifty years earlier, when Jenkins would have been growing up—so perhaps it was lodged in her lexis.

Perhaps in a similar way, I sometimes get teased for using certain words in medical notes: ‘don’ and ‘summarily’ are two examples. Both are words whose usage has collapsed since the decade when I was born, but which seem like perfectly ordinary, everyday words to me. As it happens, both were also less common in the 1950s than in the 1980s: the popularity of words can rise as well as fall.

The image at the top of this post was generated by DALL·E 3.