For those wanting to know what the new Snapchat emoji symbols mean, there is several different things that they repersent and these emojis have replaced the âBest Friendsâ feature with Friend Emojis smilies.
(plural tetrads) 1  A group of four things. ( 2 chemistry) A tetravalent atom or radical. ( biology) Two pairs of sister chromatids (a dyad pair) aligned in a certain way and often on the equatorial plane during the meiosis process.
Lesson Summary. Let's review. Iambic tetrameter is a line of poetry with four beats of one unstressed syllable, followed by one stressed syllable, which is said to have the natural duh-DUH sound of a heartbeat. A simple meter that is easily read aloud, it flows 'trippingly on the tongue,' as Shakespeare would say.esson Summary. Let's review. Iambic tetrameter is a line of poetry with four beats of one unstressed syllable, followed by one stressed syllable, which is said to have the natural duh-DUH sound of a heartbeat. A simple meter that is easily read aloud, it flows 'trippingly on the tongue,' as Shakespeare would say.