Pedants' Corner (2)

Here are four modern usages. None of them is particularly heinous and I do not know why they jar on me:
• The mispronunciation of dissect as dye-sect seems to be almost universal now. It arises from confusion with bisect, which is correctly pronounced bye-sect. Dye-sect cannot be right because a double consonant always follows a short vowel - that's what a double consonant is for.
But this is English we are talking about, so there must be exceptions. I know only one English word in which a long vowel precedes a double consonant.
There are some high-powered English language experts who sometimes look at this blog (unsurprisingly, several of them have English as a second or third language) and I am expecting one or more of them to comment on this, telling me what that word is, and providing a list of others that I haven't thought of.

• Plethora, used as if it just meant a great number, or plenty in a good sense. Actually, it means too damn many: "over-supply, glut, unhealthy repletion, or a morbid condition marked by en excess of red corpuscles in the blood". Red-faced gentlemen about to keel over with a heart attack can be described as plethoric.

• I have always used See you later to mean later on today. Many people now use it to mean See you again, any time in the future.

• Bored of.. seems to have become widely used. I have the impression that this started less than twenty years ago. Why? Tired of.. but bored with.. or bored by.. sound right to me.