A few days ago, a colleague said something (I forget exactly what) which sparked a memory of encountering a word which I had never encountered before and have never encountered or had occasion to use since. I can remember the circumstances in moderate detail and there is some supporting evidence, but just why I can remember it is a complete mystery. (I often ponder the mechanism and nature of random memories, with no firm conclusions. I think that my memory for what I remember if good, but on the other hand I forget an awful lot along the way). The word is sessile

At the end of my first year of high school (I’d just turned 13) I was awarded the citizenship prize for our year (possibly jointly with one other student – another random memory which surfaced as I was typing this). The class teacher asked what book I wanted and I said the current edition of the Guinness Book of Records (which I still have, which is most of the reason I am certain this memory happened). Sometime over the summer holidays I was staying with our grandparents. While reading the book, I encountered the record for pushing a hospital bed, a “usually sessile object”, and asked my grandmother what it meant. I can’t remember if we checked a dictionary (if so whether it was in a dictionary the size my grandparents were likely to have had (I can’t remember that they had a dictionary)) or reasoned it out between us. Clearly, the context shows that this object is not usually pushed, but is capable of it (eg a hospital bed compared with a domestic bed). 

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