Associations to the word «Pterylosis»
Wiktionary
PTERYLOSIS, noun. (zoology) The arrangement of feathers in definite areas.
Wise words
It is better wither to be silent, or to say things of more
value than silence. Sooner throw a pearl at hazard than an
idle or useless word; and do not say a little in many words,
but a great deal in a few.