| Library / English Dictionary |
SENTINEL
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
A person employed to keep watch for some anticipated event
Synonyms:
lookout; lookout man; picket; scout; sentinel; sentry; spotter; watch
Classified under:
Hypernyms ("sentinel" is a kind of...):
security guard; watcher; watchman (a guard who keeps watch)
Context examples:
Soon after, with a drink all round, we lay down to sleep, and the outside of Silver's vengeance was to put George Merry up for sentinel and threaten him with death if he should prove unfaithful.
(Treasure Island, by Robert Louis Stevenson)
The definition of N1b TNM finding depends on the specific type of cancer that it refers to; for example, for breast cancer it refers to metastases in internal mammary lymph nodes with micrometastases or macrometastases detected by sentinel lymph node biopsy but not clinically detected; for cutaneous melanoma it refers to macrometastasis in one regional lymph node; for colorectal cancer it refers to metastasis in 2-3 regional lymph nodes.
(N1b Stage Finding, NCI Thesaurus)
The definition of N3b TNM finding depends on the specific type of cancer that it refers to; for example, for breast cancer it refers to metastases in clinically detected ipsilateral internal mammary lymph nodes in the presence of one or more positive axillary lymph nodes, or in more than 3 axillary lymph nodes and in internal mammary lymph nodes with micrometastases or macrometastases detected by sentinel lymph node biopsy but not clinically detected; for gastric cancer it refers to metastases in sixteen or more regional lymph nodes; for nasopharyngeal cancer it refers to extension to the supraclavicular fossa.
(N3b Stage Finding, NCI Thesaurus)
The definition of N1c TNM finding depends on the specific type of cancer that it refers to; for example, for breast cancer it refers to metastases in 1 to 3 axillary lymph nodes and in internal mammary lymph nodes with micrometastases or macrometastases detected by sentinel lymph node biopsy but not clinically detected; for colorectal cancer it refers to tumor deposit(s) in the subserosa, mesentery, or nonperitonealized pericolic or perirectal tissues without regional lymph node metastasis.
(N1c Stage Finding, NCI Thesaurus)
In the mean time they formed up in a line of sentinels, presenting under their row of white hats every type of fighting face, from the fresh boyish countenances of Tom Belcher, Jones, and the other younger recruits, to the scarred and mutilated visages of the veteran bruisers.
(Rodney Stone, by Sir Arthur Conan Doyle)
Methylene blue stains to negatively charged cell components like nucleic acids; when administered in the lymphatic bed of a tumor during oncologic surgery, methylene blue may stain lymph nodes draining from the tumor, thereby aiding in the visual localization of tumor sentinel lymph nodes.
(Methylene Blue, NCI Thesaurus)
My last glance showed me the unconscious Summerlee, most futile of sentinels, still nodding away like a queer mechanical toy in front of the smouldering fire.
(The Lost World, by Sir Arthur Conan Doyle)
The sentinel lymph node is identified by removing lymph nodes that are stained with the blue dye and looking for cancer cells under a microscope.
(Isosulfan blue, NCI Dictionary)
I was seen by the sentinel, who would, I knew, direct the colonel’s attention to my presence.
(The Return of Sherlock Holmes, by Sir Arthur Conan Doyle)
I was wakened—indeed, we were all wakened, for I could see even the sentinel shake himself together from where he had fallen against the door-post—by a clear, hearty voice hailing us from the margin of the wood: “Block house, ahoy!” it cried. “Here's the doctor.”
(Treasure Island, by Robert Louis Stevenson)
